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version-3.49.2
src/sqliteInt.h
5 803 строки
247 KB
drh
Correctly handle the case of a multi-column UNIQUE constraint that contains
16 апр 2025, 13:53
16 апр 2025, 13:53
42182f1
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/* ** 2001 September 15 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** Internal interface definitions for SQLite. ** */ #ifndef SQLITEINT_H #define SQLITEINT_H /* Special Comments: ** ** Some comments have special meaning to the tools that measure test ** coverage: ** ** NO_TEST - The branches on this line are not ** measured by branch coverage. This is ** used on lines of code that actually ** implement parts of coverage testing. ** ** OPTIMIZATION-IF-TRUE - This branch is allowed to always be false ** and the correct answer is still obtained, ** though perhaps more slowly. ** ** OPTIMIZATION-IF-FALSE - This branch is allowed to always be true ** and the correct answer is still obtained, ** though perhaps more slowly. ** ** PREVENTS-HARMLESS-OVERREAD - This branch prevents a buffer overread ** that would be harmless and undetectable ** if it did occur. ** ** In all cases, the special comment must be enclosed in the usual ** slash-asterisk...asterisk-slash comment marks, with no spaces between the ** asterisks and the comment text. */ /* ** Make sure the Tcl calling convention macro is defined. This macro is ** only used by test code and Tcl integration code. */ #ifndef SQLITE_TCLAPI # define SQLITE_TCLAPI #endif /* ** Include the header file used to customize the compiler options for MSVC. ** This should be done first so that it can successfully prevent spurious ** compiler warnings due to subsequent content in this file and other files ** that are included by this file. */ #include "msvc.h" /* ** Special setup for VxWorks */ #include "vxworks.h" /* ** These #defines should enable >2GB file support on POSIX if the ** underlying operating system supports it. If the OS lacks ** large file support, or if the OS is windows, these should be no-ops. ** ** Ticket #2739: The _LARGEFILE_SOURCE macro must appear before any ** system #includes. Hence, this block of code must be the very first ** code in all source files. ** ** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch ** on the compiler command line. This is necessary if you are compiling ** on a recent machine (ex: Red Hat 7.2) but you want your code to work ** on an older machine (ex: Red Hat 6.0). If you compile on Red Hat 7.2 ** without this option, LFS is enable. But LFS does not exist in the kernel ** in Red Hat 6.0, so the code won't work. Hence, for maximum binary ** portability you should omit LFS. ** ** The previous paragraph was written in 2005. (This paragraph is written ** on 2008-11-28.) These days, all Linux kernels support large files, so ** you should probably leave LFS enabled. But some embedded platforms might ** lack LFS in which case the SQLITE_DISABLE_LFS macro might still be useful. ** ** Similar is true for Mac OS X. LFS is only supported on Mac OS X 9 and later. */ #ifndef SQLITE_DISABLE_LFS # define _LARGE_FILE 1 # ifndef _FILE_OFFSET_BITS # define _FILE_OFFSET_BITS 64 # endif # define _LARGEFILE_SOURCE 1 #endif /* The GCC_VERSION and MSVC_VERSION macros are used to ** conditionally include optimizations for each of these compilers. A ** value of 0 means that compiler is not being used. The ** SQLITE_DISABLE_INTRINSIC macro means do not use any compiler-specific ** optimizations, and hence set all compiler macros to 0 ** ** There was once also a CLANG_VERSION macro. However, we learn that the ** version numbers in clang are for "marketing" only and are inconsistent ** and unreliable. Fortunately, all versions of clang also recognize the ** gcc version numbers and have reasonable settings for gcc version numbers, ** so the GCC_VERSION macro will be set to a correct non-zero value even ** when compiling with clang. */ #if defined(__GNUC__) && !defined(SQLITE_DISABLE_INTRINSIC) # define GCC_VERSION (__GNUC__*1000000+__GNUC_MINOR__*1000+__GNUC_PATCHLEVEL__) #else # define GCC_VERSION 0 #endif #if defined(_MSC_VER) && !defined(SQLITE_DISABLE_INTRINSIC) # define MSVC_VERSION _MSC_VER #else # define MSVC_VERSION 0 #endif /* ** Some C99 functions in "math.h" are only present for MSVC when its version ** is associated with Visual Studio 2013 or higher. */ #ifndef SQLITE_HAVE_C99_MATH_FUNCS # if MSVC_VERSION==0 || MSVC_VERSION>=1800 # define SQLITE_HAVE_C99_MATH_FUNCS (1) # else # define SQLITE_HAVE_C99_MATH_FUNCS (0) # endif #endif /* Needed for various definitions... */ #if defined(__GNUC__) && !defined(_GNU_SOURCE) # define _GNU_SOURCE #endif #if defined(__OpenBSD__) && !defined(_BSD_SOURCE) # define _BSD_SOURCE #endif /* ** Macro to disable warnings about missing "break" at the end of a "case". */ #if defined(__has_attribute) # if __has_attribute(fallthrough) # define deliberate_fall_through __attribute__((fallthrough)); # endif #endif #if !defined(deliberate_fall_through) # define deliberate_fall_through #endif /* ** For MinGW, check to see if we can include the header file containing its ** version information, among other things. Normally, this internal MinGW ** header file would [only] be included automatically by other MinGW header ** files; however, the contained version information is now required by this ** header file to work around binary compatibility issues (see below) and ** this is the only known way to reliably obtain it. This entire #if block ** would be completely unnecessary if there was any other way of detecting ** MinGW via their preprocessor (e.g. if they customized their GCC to define ** some MinGW-specific macros). When compiling for MinGW, either the ** _HAVE_MINGW_H or _HAVE__MINGW_H (note the extra underscore) macro must be ** defined; otherwise, detection of conditions specific to MinGW will be ** disabled. */ #if defined(_HAVE_MINGW_H) # include "mingw.h" #elif defined(_HAVE__MINGW_H) # include "_mingw.h" #endif /* ** For MinGW version 4.x (and higher), check to see if the _USE_32BIT_TIME_T ** define is required to maintain binary compatibility with the MSVC runtime ** library in use (e.g. for Windows XP). */ #if !defined(_USE_32BIT_TIME_T) && !defined(_USE_64BIT_TIME_T) && \ defined(_WIN32) && !defined(_WIN64) && \ defined(__MINGW_MAJOR_VERSION) && __MINGW_MAJOR_VERSION >= 4 && \ defined(__MSVCRT__) # define _USE_32BIT_TIME_T #endif /* Optionally #include a user-defined header, whereby compilation options ** may be set prior to where they take effect, but after platform setup. ** If SQLITE_CUSTOM_INCLUDE=? is defined, its value names the #include ** file. */ #ifdef SQLITE_CUSTOM_INCLUDE # define INC_STRINGIFY_(f) #f # define INC_STRINGIFY(f) INC_STRINGIFY_(f) # include INC_STRINGIFY(SQLITE_CUSTOM_INCLUDE) #endif /* The public SQLite interface. The _FILE_OFFSET_BITS macro must appear ** first in QNX. Also, the _USE_32BIT_TIME_T macro must appear first for ** MinGW. */ #include "sqlite3.h" /* ** Reuse the STATIC_LRU for mutex access to sqlite3_temp_directory. */ #define SQLITE_MUTEX_STATIC_TEMPDIR SQLITE_MUTEX_STATIC_VFS1 /* ** Include the configuration header output by 'configure' if we're using the ** autoconf-based build */ #if defined(_HAVE_SQLITE_CONFIG_H) && !defined(SQLITECONFIG_H) #include "sqlite_cfg.h" #define SQLITECONFIG_H 1 #endif #include "sqliteLimit.h" /* Disable nuisance warnings on Borland compilers */ #if defined(__BORLANDC__) #pragma warn -rch /* unreachable code */ #pragma warn -ccc /* Condition is always true or false */ #pragma warn -aus /* Assigned value is never used */ #pragma warn -csu /* Comparing signed and unsigned */ #pragma warn -spa /* Suspicious pointer arithmetic */ #endif /* ** A few places in the code require atomic load/store of aligned ** integer values. */ #ifndef __has_extension # define __has_extension(x) 0 /* compatibility with non-clang compilers */ #endif #if GCC_VERSION>=4007000 || __has_extension(c_atomic) # define SQLITE_ATOMIC_INTRINSICS 1 # define AtomicLoad(PTR) __atomic_load_n((PTR),__ATOMIC_RELAXED) # define AtomicStore(PTR,VAL) __atomic_store_n((PTR),(VAL),__ATOMIC_RELAXED) #else # define SQLITE_ATOMIC_INTRINSICS 0 # define AtomicLoad(PTR) (*(PTR)) # define AtomicStore(PTR,VAL) (*(PTR) = (VAL)) #endif /* ** Include standard header files as necessary */ #ifdef HAVE_STDINT_H #include <stdint.h> #endif #ifdef HAVE_INTTYPES_H #include <inttypes.h> #endif /* ** The following macros are used to cast pointers to integers and ** integers to pointers. The way you do this varies from one compiler ** to the next, so we have developed the following set of #if statements ** to generate appropriate macros for a wide range of compilers. ** ** The correct "ANSI" way to do this is to use the intptr_t type. ** Unfortunately, that typedef is not available on all compilers, or ** if it is available, it requires an #include of specific headers ** that vary from one machine to the next. ** ** Ticket #3860: The llvm-gcc-4.2 compiler from Apple chokes on ** the ((void*)&((char*)0)[X]) construct. But MSVC chokes on ((void*)(X)). ** So we have to define the macros in different ways depending on the ** compiler. */ #if defined(HAVE_STDINT_H) /* Use this case if we have ANSI headers */ # define SQLITE_INT_TO_PTR(X) ((void*)(intptr_t)(X)) # define SQLITE_PTR_TO_INT(X) ((int)(intptr_t)(X)) #elif defined(__PTRDIFF_TYPE__) /* This case should work for GCC */ # define SQLITE_INT_TO_PTR(X) ((void*)(__PTRDIFF_TYPE__)(X)) # define SQLITE_PTR_TO_INT(X) ((int)(__PTRDIFF_TYPE__)(X)) #elif !defined(__GNUC__) /* Works for compilers other than LLVM */ # define SQLITE_INT_TO_PTR(X) ((void*)&((char*)0)[X]) # define SQLITE_PTR_TO_INT(X) ((int)(((char*)X)-(char*)0)) #else /* Generates a warning - but it always works */ # define SQLITE_INT_TO_PTR(X) ((void*)(X)) # define SQLITE_PTR_TO_INT(X) ((int)(X)) #endif /* ** Macros to hint to the compiler that a function should or should not be ** inlined. */ #if defined(__GNUC__) # define SQLITE_NOINLINE __attribute__((noinline)) # define SQLITE_INLINE __attribute__((always_inline)) inline #elif defined(_MSC_VER) && _MSC_VER>=1310 # define SQLITE_NOINLINE __declspec(noinline) # define SQLITE_INLINE __forceinline #else # define SQLITE_NOINLINE # define SQLITE_INLINE #endif #if defined(SQLITE_COVERAGE_TEST) || defined(__STRICT_ANSI__) # undef SQLITE_INLINE # define SQLITE_INLINE #endif /* ** Make sure that the compiler intrinsics we desire are enabled when ** compiling with an appropriate version of MSVC unless prevented by ** the SQLITE_DISABLE_INTRINSIC define. */ #if !defined(SQLITE_DISABLE_INTRINSIC) # if defined(_MSC_VER) && _MSC_VER>=1400 # if !defined(_WIN32_WCE) # include <intrin.h> # pragma intrinsic(_byteswap_ushort) # pragma intrinsic(_byteswap_ulong) # pragma intrinsic(_byteswap_uint64) # pragma intrinsic(_ReadWriteBarrier) # else # include <cmnintrin.h> # endif # endif #endif /* ** Enable SQLITE_USE_SEH by default on MSVC builds. Only omit ** SEH support if the -DSQLITE_OMIT_SEH option is given. */ #if defined(_MSC_VER) && !defined(SQLITE_OMIT_SEH) # define SQLITE_USE_SEH 1 #else # undef SQLITE_USE_SEH #endif /* ** Enable SQLITE_DIRECT_OVERFLOW_READ, unless the build explicitly ** disables it using -DSQLITE_DIRECT_OVERFLOW_READ=0 */ #if defined(SQLITE_DIRECT_OVERFLOW_READ) && SQLITE_DIRECT_OVERFLOW_READ+1==1 /* Disable if -DSQLITE_DIRECT_OVERFLOW_READ=0 */ # undef SQLITE_DIRECT_OVERFLOW_READ #else /* In all other cases, enable */ # define SQLITE_DIRECT_OVERFLOW_READ 1 #endif /* ** The SQLITE_THREADSAFE macro must be defined as 0, 1, or 2. ** 0 means mutexes are permanently disable and the library is never ** threadsafe. 1 means the library is serialized which is the highest ** level of threadsafety. 2 means the library is multithreaded - multiple ** threads can use SQLite as long as no two threads try to use the same ** database connection at the same time. ** ** Older versions of SQLite used an optional THREADSAFE macro. ** We support that for legacy. ** ** To ensure that the correct value of "THREADSAFE" is reported when querying ** for compile-time options at runtime (e.g. "PRAGMA compile_options"), this ** logic is partially replicated in ctime.c. If it is updated here, it should ** also be updated there. */ #if !defined(SQLITE_THREADSAFE) # if defined(THREADSAFE) # define SQLITE_THREADSAFE THREADSAFE # else # define SQLITE_THREADSAFE 1 /* IMP: R-07272-22309 */ # endif #endif /* ** Powersafe overwrite is on by default. But can be turned off using ** the -DSQLITE_POWERSAFE_OVERWRITE=0 command-line option. */ #ifndef SQLITE_POWERSAFE_OVERWRITE # define SQLITE_POWERSAFE_OVERWRITE 1 #endif /* ** EVIDENCE-OF: R-25715-37072 Memory allocation statistics are enabled by ** default unless SQLite is compiled with SQLITE_DEFAULT_MEMSTATUS=0 in ** which case memory allocation statistics are disabled by default. */ #if !defined(SQLITE_DEFAULT_MEMSTATUS) # define SQLITE_DEFAULT_MEMSTATUS 1 #endif /* ** Exactly one of the following macros must be defined in order to ** specify which memory allocation subsystem to use. ** ** SQLITE_SYSTEM_MALLOC // Use normal system malloc() ** SQLITE_WIN32_MALLOC // Use Win32 native heap API ** SQLITE_ZERO_MALLOC // Use a stub allocator that always fails ** SQLITE_MEMDEBUG // Debugging version of system malloc() ** ** On Windows, if the SQLITE_WIN32_MALLOC_VALIDATE macro is defined and the ** assert() macro is enabled, each call into the Win32 native heap subsystem ** will cause HeapValidate to be called. If heap validation should fail, an ** assertion will be triggered. ** ** If none of the above are defined, then set SQLITE_SYSTEM_MALLOC as ** the default. */ #if defined(SQLITE_SYSTEM_MALLOC) \ + defined(SQLITE_WIN32_MALLOC) \ + defined(SQLITE_ZERO_MALLOC) \ + defined(SQLITE_MEMDEBUG)>1 # error "Two or more of the following compile-time configuration options\ are defined but at most one is allowed:\ SQLITE_SYSTEM_MALLOC, SQLITE_WIN32_MALLOC, SQLITE_MEMDEBUG,\ SQLITE_ZERO_MALLOC" #endif #if defined(SQLITE_SYSTEM_MALLOC) \ + defined(SQLITE_WIN32_MALLOC) \ + defined(SQLITE_ZERO_MALLOC) \ + defined(SQLITE_MEMDEBUG)==0 # define SQLITE_SYSTEM_MALLOC 1 #endif /* ** If SQLITE_MALLOC_SOFT_LIMIT is not zero, then try to keep the ** sizes of memory allocations below this value where possible. */ #if !defined(SQLITE_MALLOC_SOFT_LIMIT) # define SQLITE_MALLOC_SOFT_LIMIT 1024 #endif /* ** We need to define _XOPEN_SOURCE as follows in order to enable ** recursive mutexes on most Unix systems and fchmod() on OpenBSD. ** But _XOPEN_SOURCE define causes problems for Mac OS X, so omit ** it. */ #if !defined(_XOPEN_SOURCE) && !defined(__DARWIN__) && !defined(__APPLE__) # define _XOPEN_SOURCE 600 #endif /* ** NDEBUG and SQLITE_DEBUG are opposites. It should always be true that ** defined(NDEBUG)==!defined(SQLITE_DEBUG). If this is not currently true, ** make it true by defining or undefining NDEBUG. ** ** Setting NDEBUG makes the code smaller and faster by disabling the ** assert() statements in the code. So we want the default action ** to be for NDEBUG to be set and NDEBUG to be undefined only if SQLITE_DEBUG ** is set. Thus NDEBUG becomes an opt-in rather than an opt-out ** feature. */ #if !defined(NDEBUG) && !defined(SQLITE_DEBUG) # define NDEBUG 1 #endif #if defined(NDEBUG) && defined(SQLITE_DEBUG) # undef NDEBUG #endif /* ** Enable SQLITE_ENABLE_EXPLAIN_COMMENTS if SQLITE_DEBUG is turned on. */ #if !defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) && defined(SQLITE_DEBUG) # define SQLITE_ENABLE_EXPLAIN_COMMENTS 1 #endif /* ** The testcase() macro is used to aid in coverage testing. When ** doing coverage testing, the condition inside the argument to ** testcase() must be evaluated both true and false in order to ** get full branch coverage. The testcase() macro is inserted ** to help ensure adequate test coverage in places where simple ** condition/decision coverage is inadequate. For example, testcase() ** can be used to make sure boundary values are tested. For ** bitmask tests, testcase() can be used to make sure each bit ** is significant and used at least once. On switch statements ** where multiple cases go to the same block of code, testcase() ** can insure that all cases are evaluated. */ #if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_DEBUG) # ifndef SQLITE_AMALGAMATION extern unsigned int sqlite3CoverageCounter; # endif # define testcase(X) if( X ){ sqlite3CoverageCounter += (unsigned)__LINE__; } #else # define testcase(X) #endif /* ** The TESTONLY macro is used to enclose variable declarations or ** other bits of code that are needed to support the arguments ** within testcase() and assert() macros. */ #if !defined(NDEBUG) || defined(SQLITE_COVERAGE_TEST) # define TESTONLY(X) X #else # define TESTONLY(X) #endif /* ** Sometimes we need a small amount of code such as a variable initialization ** to setup for a later assert() statement. We do not want this code to ** appear when assert() is disabled. The following macro is therefore ** used to contain that setup code. The "VVA" acronym stands for ** "Verification, Validation, and Accreditation". In other words, the ** code within VVA_ONLY() will only run during verification processes. */ #ifndef NDEBUG # define VVA_ONLY(X) X #else # define VVA_ONLY(X) #endif /* ** Disable ALWAYS() and NEVER() (make them pass-throughs) for coverage ** and mutation testing */ #if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST) # define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1 #endif /* ** The ALWAYS and NEVER macros surround boolean expressions which ** are intended to always be true or false, respectively. Such ** expressions could be omitted from the code completely. But they ** are included in a few cases in order to enhance the resilience ** of SQLite to unexpected behavior - to make the code "self-healing" ** or "ductile" rather than being "brittle" and crashing at the first ** hint of unplanned behavior. ** ** In other words, ALWAYS and NEVER are added for defensive code. ** ** When doing coverage testing ALWAYS and NEVER are hard-coded to ** be true and false so that the unreachable code they specify will ** not be counted as untested code. */ #if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS) # define ALWAYS(X) (1) # define NEVER(X) (0) #elif !defined(NDEBUG) # define ALWAYS(X) ((X)?1:(assert(0),0)) # define NEVER(X) ((X)?(assert(0),1):0) #else # define ALWAYS(X) (X) # define NEVER(X) (X) #endif /* ** Some conditionals are optimizations only. In other words, if the ** conditionals are replaced with a constant 1 (true) or 0 (false) then ** the correct answer is still obtained, though perhaps not as quickly. ** ** The following macros mark these optimizations conditionals. */ #if defined(SQLITE_MUTATION_TEST) # define OK_IF_ALWAYS_TRUE(X) (1) # define OK_IF_ALWAYS_FALSE(X) (0) #else # define OK_IF_ALWAYS_TRUE(X) (X) # define OK_IF_ALWAYS_FALSE(X) (X) #endif /* ** Some malloc failures are only possible if SQLITE_TEST_REALLOC_STRESS is ** defined. We need to defend against those failures when testing with ** SQLITE_TEST_REALLOC_STRESS, but we don't want the unreachable branches ** during a normal build. The following macro can be used to disable tests ** that are always false except when SQLITE_TEST_REALLOC_STRESS is set. */ #if defined(SQLITE_TEST_REALLOC_STRESS) # define ONLY_IF_REALLOC_STRESS(X) (X) #elif !defined(NDEBUG) # define ONLY_IF_REALLOC_STRESS(X) ((X)?(assert(0),1):0) #else # define ONLY_IF_REALLOC_STRESS(X) (0) #endif /* ** Declarations used for tracing the operating system interfaces. */ #if defined(SQLITE_FORCE_OS_TRACE) || defined(SQLITE_TEST) || \ (defined(SQLITE_DEBUG) && SQLITE_OS_WIN) extern int sqlite3OSTrace; # define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X # define SQLITE_HAVE_OS_TRACE #else # define OSTRACE(X) # undef SQLITE_HAVE_OS_TRACE #endif /* ** Is the sqlite3ErrName() function needed in the build? Currently, ** it is needed by "mutex_w32.c" (when debugging), "os_win.c" (when ** OSTRACE is enabled), and by several "test*.c" files (which are ** compiled using SQLITE_TEST). */ #if defined(SQLITE_HAVE_OS_TRACE) || defined(SQLITE_TEST) || \ (defined(SQLITE_DEBUG) && SQLITE_OS_WIN) # define SQLITE_NEED_ERR_NAME #else # undef SQLITE_NEED_ERR_NAME #endif /* ** SQLITE_ENABLE_EXPLAIN_COMMENTS is incompatible with SQLITE_OMIT_EXPLAIN */ #ifdef SQLITE_OMIT_EXPLAIN # undef SQLITE_ENABLE_EXPLAIN_COMMENTS #endif /* ** SQLITE_OMIT_VIRTUALTABLE implies SQLITE_OMIT_ALTERTABLE */ #if defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_OMIT_ALTERTABLE) # define SQLITE_OMIT_ALTERTABLE #endif #define SQLITE_DIGIT_SEPARATOR '_' /* ** Return true (non-zero) if the input is an integer that is too large ** to fit in 32-bits. This macro is used inside of various testcase() ** macros to verify that we have tested SQLite for large-file support. */ #define IS_BIG_INT(X) (((X)&~(i64)0xffffffff)!=0) /* ** The macro unlikely() is a hint that surrounds a boolean ** expression that is usually false. Macro likely() surrounds ** a boolean expression that is usually true. These hints could, ** in theory, be used by the compiler to generate better code, but ** currently they are just comments for human readers. */ #define likely(X) (X) #define unlikely(X) (X) #include "hash.h" #include "parse.h" #include <stdio.h> #include <stdlib.h> #include <string.h> #include <assert.h> #include <stddef.h> #include <ctype.h> /* ** Use a macro to replace memcpy() if compiled with SQLITE_INLINE_MEMCPY. ** This allows better measurements of where memcpy() is used when running ** cachegrind. But this macro version of memcpy() is very slow so it ** should not be used in production. This is a performance measurement ** hack only. */ #ifdef SQLITE_INLINE_MEMCPY # define memcpy(D,S,N) {char*xxd=(char*)(D);const char*xxs=(const char*)(S);\ int xxn=(N);while(xxn-->0)*(xxd++)=*(xxs++);} #endif /* ** If compiling for a processor that lacks floating point support, ** substitute integer for floating-point */ #ifdef SQLITE_OMIT_FLOATING_POINT # define double sqlite_int64 # define float sqlite_int64 # define fabs(X) ((X)<0?-(X):(X)) # define sqlite3IsOverflow(X) 0 # ifndef SQLITE_BIG_DBL # define SQLITE_BIG_DBL (((sqlite3_int64)1)<<50) # endif # define SQLITE_OMIT_DATETIME_FUNCS 1 # define SQLITE_OMIT_TRACE 1 # undef SQLITE_MIXED_ENDIAN_64BIT_FLOAT # undef SQLITE_HAVE_ISNAN #endif #ifndef SQLITE_BIG_DBL # define SQLITE_BIG_DBL (1e99) #endif /* ** OMIT_TEMPDB is set to 1 if SQLITE_OMIT_TEMPDB is defined, or 0 ** afterward. Having this macro allows us to cause the C compiler ** to omit code used by TEMP tables without messy #ifndef statements. */ #ifdef SQLITE_OMIT_TEMPDB #define OMIT_TEMPDB 1 #else #define OMIT_TEMPDB 0 #endif /* ** The "file format" number is an integer that is incremented whenever ** the VDBE-level file format changes. The following macros define the ** the default file format for new databases and the maximum file format ** that the library can read. */ #define SQLITE_MAX_FILE_FORMAT 4 #ifndef SQLITE_DEFAULT_FILE_FORMAT # define SQLITE_DEFAULT_FILE_FORMAT 4 #endif /* ** Determine whether triggers are recursive by default. This can be ** changed at run-time using a pragma. */ #ifndef SQLITE_DEFAULT_RECURSIVE_TRIGGERS # define SQLITE_DEFAULT_RECURSIVE_TRIGGERS 0 #endif /* ** Provide a default value for SQLITE_TEMP_STORE in case it is not specified ** on the command-line */ #ifndef SQLITE_TEMP_STORE # define SQLITE_TEMP_STORE 1 #endif /* ** If no value has been provided for SQLITE_MAX_WORKER_THREADS, or if ** SQLITE_TEMP_STORE is set to 3 (never use temporary files), set it ** to zero. */ #if SQLITE_TEMP_STORE==3 || SQLITE_THREADSAFE==0 # undef SQLITE_MAX_WORKER_THREADS # define SQLITE_MAX_WORKER_THREADS 0 #endif #ifndef SQLITE_MAX_WORKER_THREADS # define SQLITE_MAX_WORKER_THREADS 8 #endif #ifndef SQLITE_DEFAULT_WORKER_THREADS # define SQLITE_DEFAULT_WORKER_THREADS 0 #endif #if SQLITE_DEFAULT_WORKER_THREADS>SQLITE_MAX_WORKER_THREADS # undef SQLITE_MAX_WORKER_THREADS # define SQLITE_MAX_WORKER_THREADS SQLITE_DEFAULT_WORKER_THREADS #endif /* ** The default initial allocation for the pagecache when using separate ** pagecaches for each database connection. A positive number is the ** number of pages. A negative number N translations means that a buffer ** of -1024*N bytes is allocated and used for as many pages as it will hold. ** ** The default value of "20" was chosen to minimize the run-time of the ** speedtest1 test program with options: --shrink-memory --reprepare */ #ifndef SQLITE_DEFAULT_PCACHE_INITSZ # define SQLITE_DEFAULT_PCACHE_INITSZ 20 #endif /* ** Default value for the SQLITE_CONFIG_SORTERREF_SIZE option. */ #ifndef SQLITE_DEFAULT_SORTERREF_SIZE # define SQLITE_DEFAULT_SORTERREF_SIZE 0x7fffffff #endif /* ** The compile-time options SQLITE_MMAP_READWRITE and ** SQLITE_ENABLE_BATCH_ATOMIC_WRITE are not compatible with one another. ** You must choose one or the other (or neither) but not both. */ #if defined(SQLITE_MMAP_READWRITE) && defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) #error Cannot use both SQLITE_MMAP_READWRITE and SQLITE_ENABLE_BATCH_ATOMIC_WRITE #endif /* ** GCC does not define the offsetof() macro so we'll have to do it ** ourselves. */ #ifndef offsetof #define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD)) #endif /* ** Macros to compute minimum and maximum of two numbers. */ #ifndef MIN # define MIN(A,B) ((A)<(B)?(A):(B)) #endif #ifndef MAX # define MAX(A,B) ((A)>(B)?(A):(B)) #endif /* ** Swap two objects of type TYPE. */ #define SWAP(TYPE,A,B) {TYPE t=A; A=B; B=t;} /* ** Check to see if this machine uses EBCDIC. (Yes, believe it or ** not, there are still machines out there that use EBCDIC.) */ #if 'A' == '\301' # define SQLITE_EBCDIC 1 #else # define SQLITE_ASCII 1 #endif /* ** Integers of known sizes. These typedefs might change for architectures ** where the sizes very. Preprocessor macros are available so that the ** types can be conveniently redefined at compile-type. Like this: ** ** cc '-DUINTPTR_TYPE=long long int' ... */ #ifndef UINT32_TYPE # ifdef HAVE_UINT32_T # define UINT32_TYPE uint32_t # else # define UINT32_TYPE unsigned int # endif #endif #ifndef UINT16_TYPE # ifdef HAVE_UINT16_T # define UINT16_TYPE uint16_t # else # define UINT16_TYPE unsigned short int # endif #endif #ifndef INT16_TYPE # ifdef HAVE_INT16_T # define INT16_TYPE int16_t # else # define INT16_TYPE short int # endif #endif #ifndef UINT8_TYPE # ifdef HAVE_UINT8_T # define UINT8_TYPE uint8_t # else # define UINT8_TYPE unsigned char # endif #endif #ifndef INT8_TYPE # ifdef HAVE_INT8_T # define INT8_TYPE int8_t # else # define INT8_TYPE signed char # endif #endif typedef sqlite_int64 i64; /* 8-byte signed integer */ typedef sqlite_uint64 u64; /* 8-byte unsigned integer */ typedef UINT32_TYPE u32; /* 4-byte unsigned integer */ typedef UINT16_TYPE u16; /* 2-byte unsigned integer */ typedef INT16_TYPE i16; /* 2-byte signed integer */ typedef UINT8_TYPE u8; /* 1-byte unsigned integer */ typedef INT8_TYPE i8; /* 1-byte signed integer */ /* ** SQLITE_MAX_U32 is a u64 constant that is the maximum u64 value ** that can be stored in a u32 without loss of data. The value ** is 0x00000000ffffffff. But because of quirks of some compilers, we ** have to specify the value in the less intuitive manner shown: */ #define SQLITE_MAX_U32 ((((u64)1)<<32)-1) /* ** The datatype used to store estimates of the number of rows in a ** table or index. */ typedef u64 tRowcnt; /* ** Estimated quantities used for query planning are stored as 16-bit ** logarithms. For quantity X, the value stored is 10*log2(X). This ** gives a possible range of values of approximately 1.0e986 to 1e-986. ** But the allowed values are "grainy". Not every value is representable. ** For example, quantities 16 and 17 are both represented by a LogEst ** of 40. However, since LogEst quantities are suppose to be estimates, ** not exact values, this imprecision is not a problem. ** ** "LogEst" is short for "Logarithmic Estimate". ** ** Examples: ** 1 -> 0 20 -> 43 10000 -> 132 ** 2 -> 10 25 -> 46 25000 -> 146 ** 3 -> 16 100 -> 66 1000000 -> 199 ** 4 -> 20 1000 -> 99 1048576 -> 200 ** 10 -> 33 1024 -> 100 4294967296 -> 320 ** ** The LogEst can be negative to indicate fractional values. ** Examples: ** ** 0.5 -> -10 0.1 -> -33 0.0625 -> -40 */ typedef INT16_TYPE LogEst; #define LOGEST_MIN (-32768) #define LOGEST_MAX (32767) /* ** Set the SQLITE_PTRSIZE macro to the number of bytes in a pointer */ #ifndef SQLITE_PTRSIZE # if defined(__SIZEOF_POINTER__) # define SQLITE_PTRSIZE __SIZEOF_POINTER__ # elif defined(i386) || defined(__i386__) || defined(_M_IX86) || \ defined(_M_ARM) || defined(__arm__) || defined(__x86) || \ (defined(__APPLE__) && defined(__ppc__)) || \ (defined(__TOS_AIX__) && !defined(__64BIT__)) # define SQLITE_PTRSIZE 4 # else # define SQLITE_PTRSIZE 8 # endif #endif /* The uptr type is an unsigned integer large enough to hold a pointer */ #if defined(HAVE_STDINT_H) typedef uintptr_t uptr; #elif SQLITE_PTRSIZE==4 typedef u32 uptr; #else typedef u64 uptr; #endif /* ** The SQLITE_WITHIN(P,S,E) macro checks to see if pointer P points to ** something between S (inclusive) and E (exclusive). ** ** In other words, S is a buffer and E is a pointer to the first byte after ** the end of buffer S. This macro returns true if P points to something ** contained within the buffer S. */ #define SQLITE_WITHIN(P,S,E) (((uptr)(P)>=(uptr)(S))&&((uptr)(P)<(uptr)(E))) /* ** P is one byte past the end of a large buffer. Return true if a span of bytes ** between S..E crosses the end of that buffer. In other words, return true ** if the sub-buffer S..E-1 overflows the buffer whose last byte is P-1. ** ** S is the start of the span. E is one byte past the end of end of span. ** ** P ** |-----------------| FALSE ** |-------| ** S E ** ** P ** |-----------------| ** |-------| TRUE ** S E ** ** P ** |-----------------| ** |-------| FALSE ** S E */ #define SQLITE_OVERFLOW(P,S,E) (((uptr)(S)<(uptr)(P))&&((uptr)(E)>(uptr)(P))) /* ** Macros to determine whether the machine is big or little endian, ** and whether or not that determination is run-time or compile-time. ** ** For best performance, an attempt is made to guess at the byte-order ** using C-preprocessor macros. If that is unsuccessful, or if ** -DSQLITE_BYTEORDER=0 is set, then byte-order is determined ** at run-time. ** ** If you are building SQLite on some obscure platform for which the ** following ifdef magic does not work, you can always include either: ** ** -DSQLITE_BYTEORDER=1234 ** ** or ** ** -DSQLITE_BYTEORDER=4321 ** ** to cause the build to work for little-endian or big-endian processors, ** respectively. */ #ifndef SQLITE_BYTEORDER /* Replicate changes at tag-20230904a */ # if defined(__BYTE_ORDER__) && __BYTE_ORDER__==__ORDER_BIG_ENDIAN__ # define SQLITE_BYTEORDER 4321 # elif defined(__BYTE_ORDER__) && __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__ # define SQLITE_BYTEORDER 1234 # elif defined(__BIG_ENDIAN__) && __BIG_ENDIAN__==1 # define SQLITE_BYTEORDER 4321 # elif defined(i386) || defined(__i386__) || defined(_M_IX86) || \ defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ defined(__ARMEL__) || defined(__AARCH64EL__) || defined(_M_ARM64) # define SQLITE_BYTEORDER 1234 # elif defined(sparc) || defined(__ARMEB__) || defined(__AARCH64EB__) # define SQLITE_BYTEORDER 4321 # else # define SQLITE_BYTEORDER 0 # endif #endif #if SQLITE_BYTEORDER==4321 # define SQLITE_BIGENDIAN 1 # define SQLITE_LITTLEENDIAN 0 # define SQLITE_UTF16NATIVE SQLITE_UTF16BE #elif SQLITE_BYTEORDER==1234 # define SQLITE_BIGENDIAN 0 # define SQLITE_LITTLEENDIAN 1 # define SQLITE_UTF16NATIVE SQLITE_UTF16LE #else # ifdef SQLITE_AMALGAMATION const int sqlite3one = 1; # else extern const int sqlite3one; # endif # define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0) # define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1) # define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE) #endif /* ** Constants for the largest and smallest possible 64-bit signed integers. ** These macros are designed to work correctly on both 32-bit and 64-bit ** compilers. */ #define LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32)) #define LARGEST_UINT64 (0xffffffff|(((u64)0xffffffff)<<32)) #define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64) /* ** Round up a number to the next larger multiple of 8. This is used ** to force 8-byte alignment on 64-bit architectures. ** ** ROUND8() always does the rounding, for any argument. ** ** ROUND8P() assumes that the argument is already an integer number of ** pointers in size, and so it is a no-op on systems where the pointer ** size is 8. */ #define ROUND8(x) (((x)+7)&~7) #if SQLITE_PTRSIZE==8 # define ROUND8P(x) (x) #else # define ROUND8P(x) (((x)+7)&~7) #endif /* ** Round down to the nearest multiple of 8 */ #define ROUNDDOWN8(x) ((x)&~7) /* ** Assert that the pointer X is aligned to an 8-byte boundary. This ** macro is used only within assert() to verify that the code gets ** all alignment restrictions correct. ** ** Except, if SQLITE_4_BYTE_ALIGNED_MALLOC is defined, then the ** underlying malloc() implementation might return us 4-byte aligned ** pointers. In that case, only verify 4-byte alignment. */ #ifdef SQLITE_4_BYTE_ALIGNED_MALLOC # define EIGHT_BYTE_ALIGNMENT(X) ((((uptr)(X) - (uptr)0)&3)==0) #else # define EIGHT_BYTE_ALIGNMENT(X) ((((uptr)(X) - (uptr)0)&7)==0) #endif /* ** Disable MMAP on platforms where it is known to not work */ #if defined(__OpenBSD__) || defined(__QNXNTO__) # undef SQLITE_MAX_MMAP_SIZE # define SQLITE_MAX_MMAP_SIZE 0 #endif /* ** Default maximum size of memory used by memory-mapped I/O in the VFS */ #ifdef __APPLE__ # include <TargetConditionals.h> #endif #ifndef SQLITE_MAX_MMAP_SIZE # if defined(__linux__) \ || defined(_WIN32) \ || (defined(__APPLE__) && defined(__MACH__)) \ || defined(__sun) \ || defined(__FreeBSD__) \ || defined(__DragonFly__) # define SQLITE_MAX_MMAP_SIZE 0x7fff0000 /* 2147418112 */ # else # define SQLITE_MAX_MMAP_SIZE 0 # endif #endif /* ** The default MMAP_SIZE is zero on all platforms. Or, even if a larger ** default MMAP_SIZE is specified at compile-time, make sure that it does ** not exceed the maximum mmap size. */ #ifndef SQLITE_DEFAULT_MMAP_SIZE # define SQLITE_DEFAULT_MMAP_SIZE 0 #endif #if SQLITE_DEFAULT_MMAP_SIZE>SQLITE_MAX_MMAP_SIZE # undef SQLITE_DEFAULT_MMAP_SIZE # define SQLITE_DEFAULT_MMAP_SIZE SQLITE_MAX_MMAP_SIZE #endif /* ** TREETRACE_ENABLED will be either 1 or 0 depending on whether or not ** the Abstract Syntax Tree tracing logic is turned on. */ #if !defined(SQLITE_AMALGAMATION) extern u32 sqlite3TreeTrace; #endif #if defined(SQLITE_DEBUG) \ && (defined(SQLITE_TEST) || defined(SQLITE_ENABLE_SELECTTRACE) \ || defined(SQLITE_ENABLE_TREETRACE)) # define TREETRACE_ENABLED 1 # define TREETRACE(K,P,S,X) \ if(sqlite3TreeTrace&(K)) \ sqlite3DebugPrintf("%u/%d/%p: ",(S)->selId,(P)->addrExplain,(S)),\ sqlite3DebugPrintf X #else # define TREETRACE(K,P,S,X) # define TREETRACE_ENABLED 0 #endif /* TREETRACE flag meanings: ** ** 0x00000001 Beginning and end of SELECT processing ** 0x00000002 WHERE clause processing ** 0x00000004 Query flattener ** 0x00000008 Result-set wildcard expansion ** 0x00000010 Query name resolution ** 0x00000020 Aggregate analysis ** 0x00000040 Window functions ** 0x00000080 Generated column names ** 0x00000100 Move HAVING terms into WHERE ** 0x00000200 Count-of-view optimization ** 0x00000400 Compound SELECT processing ** 0x00000800 Drop superfluous ORDER BY ** 0x00001000 LEFT JOIN simplifies to JOIN ** 0x00002000 Constant propagation ** 0x00004000 Push-down optimization ** 0x00008000 After all FROM-clause analysis ** 0x00010000 Beginning of DELETE/INSERT/UPDATE processing ** 0x00020000 Transform DISTINCT into GROUP BY ** 0x00040000 SELECT tree dump after all code has been generated ** 0x00080000 NOT NULL strength reduction */ /* ** Macros for "wheretrace" */ extern u32 sqlite3WhereTrace; #if defined(SQLITE_DEBUG) \ && (defined(SQLITE_TEST) || defined(SQLITE_ENABLE_WHERETRACE)) # define WHERETRACE(K,X) if(sqlite3WhereTrace&(K)) sqlite3DebugPrintf X # define WHERETRACE_ENABLED 1 #else # define WHERETRACE(K,X) #endif /* ** Bits for the sqlite3WhereTrace mask: ** ** (---any--) Top-level block structure ** 0x-------F High-level debug messages ** 0x----FFF- More detail ** 0xFFFF---- Low-level debug messages ** ** 0x00000001 Code generation ** 0x00000002 Solver (Use 0x40000 for less detail) ** 0x00000004 Solver costs ** 0x00000008 WhereLoop inserts ** ** 0x00000010 Display sqlite3_index_info xBestIndex calls ** 0x00000020 Range an equality scan metrics ** 0x00000040 IN operator decisions ** 0x00000080 WhereLoop cost adjustments ** 0x00000100 ** 0x00000200 Covering index decisions ** 0x00000400 OR optimization ** 0x00000800 Index scanner ** 0x00001000 More details associated with code generation ** 0x00002000 ** 0x00004000 Show all WHERE terms at key points ** 0x00008000 Show the full SELECT statement at key places ** ** 0x00010000 Show more detail when printing WHERE terms ** 0x00020000 Show WHERE terms returned from whereScanNext() ** 0x00040000 Solver overview messages ** 0x00080000 Star-query heuristic */ /* ** An instance of the following structure is used to store the busy-handler ** callback for a given sqlite handle. ** ** The sqlite.busyHandler member of the sqlite struct contains the busy ** callback for the database handle. Each pager opened via the sqlite ** handle is passed a pointer to sqlite.busyHandler. The busy-handler ** callback is currently invoked only from within pager.c. */ typedef struct BusyHandler BusyHandler; struct BusyHandler { int (*xBusyHandler)(void *,int); /* The busy callback */ void *pBusyArg; /* First arg to busy callback */ int nBusy; /* Incremented with each busy call */ }; /* ** Name of table that holds the database schema. ** ** The PREFERRED names are used wherever possible. But LEGACY is also ** used for backwards compatibility. ** ** 1. Queries can use either the PREFERRED or the LEGACY names ** 2. The sqlite3_set_authorizer() callback uses the LEGACY name ** 3. The PRAGMA table_list statement uses the PREFERRED name ** ** The LEGACY names are stored in the internal symbol hash table ** in support of (2). Names are translated using sqlite3PreferredTableName() ** for (3). The sqlite3FindTable() function takes care of translating ** names for (1). ** ** Note that "sqlite_temp_schema" can also be called "temp.sqlite_schema". */ #define LEGACY_SCHEMA_TABLE "sqlite_master" #define LEGACY_TEMP_SCHEMA_TABLE "sqlite_temp_master" #define PREFERRED_SCHEMA_TABLE "sqlite_schema" #define PREFERRED_TEMP_SCHEMA_TABLE "sqlite_temp_schema" /* ** The root-page of the schema table. */ #define SCHEMA_ROOT 1 /* ** The name of the schema table. The name is different for TEMP. */ #define SCHEMA_TABLE(x) \ ((!OMIT_TEMPDB)&&(x==1)?LEGACY_TEMP_SCHEMA_TABLE:LEGACY_SCHEMA_TABLE) /* ** A convenience macro that returns the number of elements in ** an array. */ #define ArraySize(X) ((int)(sizeof(X)/sizeof(X[0]))) /* ** Determine if the argument is a power of two */ #define IsPowerOfTwo(X) (((X)&((X)-1))==0) /* ** The following value as a destructor means to use sqlite3DbFree(). ** The sqlite3DbFree() routine requires two parameters instead of the ** one parameter that destructors normally want. So we have to introduce ** this magic value that the code knows to handle differently. Any ** pointer will work here as long as it is distinct from SQLITE_STATIC ** and SQLITE_TRANSIENT. */ #define SQLITE_DYNAMIC ((sqlite3_destructor_type)sqlite3OomClear) /* ** When SQLITE_OMIT_WSD is defined, it means that the target platform does ** not support Writable Static Data (WSD) such as global and static variables. ** All variables must either be on the stack or dynamically allocated from ** the heap. When WSD is unsupported, the variable declarations scattered ** throughout the SQLite code must become constants instead. The SQLITE_WSD ** macro is used for this purpose. And instead of referencing the variable ** directly, we use its constant as a key to lookup the run-time allocated ** buffer that holds real variable. The constant is also the initializer ** for the run-time allocated buffer. ** ** In the usual case where WSD is supported, the SQLITE_WSD and GLOBAL ** macros become no-ops and have zero performance impact. */ #ifdef SQLITE_OMIT_WSD #define SQLITE_WSD const #define GLOBAL(t,v) (*(t*)sqlite3_wsd_find((void*)&(v), sizeof(v))) #define sqlite3GlobalConfig GLOBAL(struct Sqlite3Config, sqlite3Config) int sqlite3_wsd_init(int N, int J); void *sqlite3_wsd_find(void *K, int L); #else #define SQLITE_WSD #define GLOBAL(t,v) v #define sqlite3GlobalConfig sqlite3Config #endif /* ** The following macros are used to suppress compiler warnings and to ** make it clear to human readers when a function parameter is deliberately ** left unused within the body of a function. This usually happens when ** a function is called via a function pointer. For example the ** implementation of an SQL aggregate step callback may not use the ** parameter indicating the number of arguments passed to the aggregate, ** if it knows that this is enforced elsewhere. ** ** When a function parameter is not used at all within the body of a function, ** it is generally named "NotUsed" or "NotUsed2" to make things even clearer. ** However, these macros may also be used to suppress warnings related to ** parameters that may or may not be used depending on compilation options. ** For example those parameters only used in assert() statements. In these ** cases the parameters are named as per the usual conventions. */ #define UNUSED_PARAMETER(x) (void)(x) #define UNUSED_PARAMETER2(x,y) UNUSED_PARAMETER(x),UNUSED_PARAMETER(y) /* ** Forward references to structures */ typedef struct AggInfo AggInfo; typedef struct AuthContext AuthContext; typedef struct AutoincInfo AutoincInfo; typedef struct Bitvec Bitvec; typedef struct CollSeq CollSeq; typedef struct Column Column; typedef struct Cte Cte; typedef struct CteUse CteUse; typedef struct Db Db; typedef struct DbClientData DbClientData; typedef struct DbFixer DbFixer; typedef struct Schema Schema; typedef struct Expr Expr; typedef struct ExprList ExprList; typedef struct FKey FKey; typedef struct FpDecode FpDecode; typedef struct FuncDestructor FuncDestructor; typedef struct FuncDef FuncDef; typedef struct FuncDefHash FuncDefHash; typedef struct IdList IdList; typedef struct Index Index; typedef struct IndexedExpr IndexedExpr; typedef struct IndexSample IndexSample; typedef struct KeyClass KeyClass; typedef struct KeyInfo KeyInfo; typedef struct Lookaside Lookaside; typedef struct LookasideSlot LookasideSlot; typedef struct Module Module; typedef struct NameContext NameContext; typedef struct OnOrUsing OnOrUsing; typedef struct Parse Parse; typedef struct ParseCleanup ParseCleanup; typedef struct PreUpdate PreUpdate; typedef struct PrintfArguments PrintfArguments; typedef struct RCStr RCStr; typedef struct RenameToken RenameToken; typedef struct Returning Returning; typedef struct RowSet RowSet; typedef struct Savepoint Savepoint; typedef struct Select Select; typedef struct SQLiteThread SQLiteThread; typedef struct SelectDest SelectDest; typedef struct Subquery Subquery; typedef struct SrcItem SrcItem; typedef struct SrcList SrcList; typedef struct sqlite3_str StrAccum; /* Internal alias for sqlite3_str */ typedef struct Table Table; typedef struct TableLock TableLock; typedef struct Token Token; typedef struct TreeView TreeView; typedef struct Trigger Trigger; typedef struct TriggerPrg TriggerPrg; typedef struct TriggerStep TriggerStep; typedef struct UnpackedRecord UnpackedRecord; typedef struct Upsert Upsert; typedef struct VTable VTable; typedef struct VtabCtx VtabCtx; typedef struct Walker Walker; typedef struct WhereInfo WhereInfo; typedef struct Window Window; typedef struct With With; /* ** The bitmask datatype defined below is used for various optimizations. ** ** Changing this from a 64-bit to a 32-bit type limits the number of ** tables in a join to 32 instead of 64. But it also reduces the size ** of the library by 738 bytes on ix86. */ #ifdef SQLITE_BITMASK_TYPE typedef SQLITE_BITMASK_TYPE Bitmask; #else typedef u64 Bitmask; #endif /* ** The number of bits in a Bitmask. "BMS" means "BitMask Size". */ #define BMS ((int)(sizeof(Bitmask)*8)) /* ** A bit in a Bitmask */ #define MASKBIT(n) (((Bitmask)1)<<(n)) #define MASKBIT64(n) (((u64)1)<<(n)) #define MASKBIT32(n) (((unsigned int)1)<<(n)) #define SMASKBIT32(n) ((n)<=31?((unsigned int)1)<<(n):0) #define ALLBITS ((Bitmask)-1) #define TOPBIT (((Bitmask)1)<<(BMS-1)) /* A VList object records a mapping between parameters/variables/wildcards ** in the SQL statement (such as $abc, @pqr, or :xyz) and the integer ** variable number associated with that parameter. See the format description ** on the sqlite3VListAdd() routine for more information. A VList is really ** just an array of integers. */ typedef int VList; /* ** Defer sourcing vdbe.h and btree.h until after the "u8" and ** "BusyHandler" typedefs. vdbe.h also requires a few of the opaque ** pointer types (i.e. FuncDef) defined above. */ #include "os.h" #include "pager.h" #include "btree.h" #include "vdbe.h" #include "pcache.h" #include "mutex.h" /* The SQLITE_EXTRA_DURABLE compile-time option used to set the default ** synchronous setting to EXTRA. It is no longer supported. */ #ifdef SQLITE_EXTRA_DURABLE # warning Use SQLITE_DEFAULT_SYNCHRONOUS=3 instead of SQLITE_EXTRA_DURABLE # define SQLITE_DEFAULT_SYNCHRONOUS 3 #endif /* ** Default synchronous levels. ** ** Note that (for historical reasons) the PAGER_SYNCHRONOUS_* macros differ ** from the SQLITE_DEFAULT_SYNCHRONOUS value by 1. ** ** PAGER_SYNCHRONOUS DEFAULT_SYNCHRONOUS ** OFF 1 0 ** NORMAL 2 1 ** FULL 3 2 ** EXTRA 4 3 ** ** The "PRAGMA synchronous" statement also uses the zero-based numbers. ** In other words, the zero-based numbers are used for all external interfaces ** and the one-based values are used internally. */ #ifndef SQLITE_DEFAULT_SYNCHRONOUS # define SQLITE_DEFAULT_SYNCHRONOUS 2 #endif #ifndef SQLITE_DEFAULT_WAL_SYNCHRONOUS # define SQLITE_DEFAULT_WAL_SYNCHRONOUS SQLITE_DEFAULT_SYNCHRONOUS #endif /* ** Each database file to be accessed by the system is an instance ** of the following structure. There are normally two of these structures ** in the sqlite.aDb[] array. aDb[0] is the main database file and ** aDb[1] is the database file used to hold temporary tables. Additional ** databases may be attached. */ struct Db { char *zDbSName; /* Name of this database. (schema name, not filename) */ Btree *pBt; /* The B*Tree structure for this database file */ u8 safety_level; /* How aggressive at syncing data to disk */ u8 bSyncSet; /* True if "PRAGMA synchronous=N" has been run */ Schema *pSchema; /* Pointer to database schema (possibly shared) */ }; /* ** An instance of the following structure stores a database schema. ** ** Most Schema objects are associated with a Btree. The exception is ** the Schema for the TEMP database (sqlite3.aDb[1]) which is free-standing. ** In shared cache mode, a single Schema object can be shared by multiple ** Btrees that refer to the same underlying BtShared object. ** ** Schema objects are automatically deallocated when the last Btree that ** references them is destroyed. The TEMP Schema is manually freed by ** sqlite3_close(). * ** A thread must be holding a mutex on the corresponding Btree in order ** to access Schema content. This implies that the thread must also be ** holding a mutex on the sqlite3 connection pointer that owns the Btree. ** For a TEMP Schema, only the connection mutex is required. */ struct Schema { int schema_cookie; /* Database schema version number for this file */ int iGeneration; /* Generation counter. Incremented with each change */ Hash tblHash; /* All tables indexed by name */ Hash idxHash; /* All (named) indices indexed by name */ Hash trigHash; /* All triggers indexed by name */ Hash fkeyHash; /* All foreign keys by referenced table name */ Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */ u8 file_format; /* Schema format version for this file */ u8 enc; /* Text encoding used by this database */ u16 schemaFlags; /* Flags associated with this schema */ int cache_size; /* Number of pages to use in the cache */ }; /* ** These macros can be used to test, set, or clear bits in the ** Db.pSchema->flags field. */ #define DbHasProperty(D,I,P) (((D)->aDb[I].pSchema->schemaFlags&(P))==(P)) #define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->schemaFlags&(P))!=0) #define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->schemaFlags|=(P) #define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->schemaFlags&=~(P) /* ** Allowed values for the DB.pSchema->flags field. ** ** The DB_SchemaLoaded flag is set after the database schema has been ** read into internal hash tables. ** ** DB_UnresetViews means that one or more views have column names that ** have been filled out. If the schema changes, these column names might ** changes and so the view will need to be reset. */ #define DB_SchemaLoaded 0x0001 /* The schema has been loaded */ #define DB_UnresetViews 0x0002 /* Some views have defined column names */ #define DB_ResetWanted 0x0008 /* Reset the schema when nSchemaLock==0 */ /* ** The number of different kinds of things that can be limited ** using the sqlite3_limit() interface. */ #define SQLITE_N_LIMIT (SQLITE_LIMIT_WORKER_THREADS+1) /* ** Lookaside malloc is a set of fixed-size buffers that can be used ** to satisfy small transient memory allocation requests for objects ** associated with a particular database connection. The use of ** lookaside malloc provides a significant performance enhancement ** (approx 10%) by avoiding numerous malloc/free requests while parsing ** SQL statements. ** ** The Lookaside structure holds configuration information about the ** lookaside malloc subsystem. Each available memory allocation in ** the lookaside subsystem is stored on a linked list of LookasideSlot ** objects. ** ** Lookaside allocations are only allowed for objects that are associated ** with a particular database connection. Hence, schema information cannot ** be stored in lookaside because in shared cache mode the schema information ** is shared by multiple database connections. Therefore, while parsing ** schema information, the Lookaside.bEnabled flag is cleared so that ** lookaside allocations are not used to construct the schema objects. ** ** New lookaside allocations are only allowed if bDisable==0. When ** bDisable is greater than zero, sz is set to zero which effectively ** disables lookaside without adding a new test for the bDisable flag ** in a performance-critical path. sz should be set by to szTrue whenever ** bDisable changes back to zero. ** ** Lookaside buffers are initially held on the pInit list. As they are ** used and freed, they are added back to the pFree list. New allocations ** come off of pFree first, then pInit as a fallback. This dual-list ** allows use to compute a high-water mark - the maximum number of allocations ** outstanding at any point in the past - by subtracting the number of ** allocations on the pInit list from the total number of allocations. ** ** Enhancement on 2019-12-12: Two-size-lookaside ** The default lookaside configuration is 100 slots of 1200 bytes each. ** The larger slot sizes are important for performance, but they waste ** a lot of space, as most lookaside allocations are less than 128 bytes. ** The two-size-lookaside enhancement breaks up the lookaside allocation ** into two pools: One of 128-byte slots and the other of the default size ** (1200-byte) slots. Allocations are filled from the small-pool first, ** failing over to the full-size pool if that does not work. Thus more ** lookaside slots are available while also using less memory. ** This enhancement can be omitted by compiling with ** SQLITE_OMIT_TWOSIZE_LOOKASIDE. */ struct Lookaside { u32 bDisable; /* Only operate the lookaside when zero */ u16 sz; /* Size of each buffer in bytes */ u16 szTrue; /* True value of sz, even if disabled */ u8 bMalloced; /* True if pStart obtained from sqlite3_malloc() */ u32 nSlot; /* Number of lookaside slots allocated */ u32 anStat[3]; /* 0: hits. 1: size misses. 2: full misses */ LookasideSlot *pInit; /* List of buffers not previously used */ LookasideSlot *pFree; /* List of available buffers */ #ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE LookasideSlot *pSmallInit; /* List of small buffers not previously used */ LookasideSlot *pSmallFree; /* List of available small buffers */ void *pMiddle; /* First byte past end of full-size buffers and ** the first byte of LOOKASIDE_SMALL buffers */ #endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */ void *pStart; /* First byte of available memory space */ void *pEnd; /* First byte past end of available space */ void *pTrueEnd; /* True value of pEnd, when db->pnBytesFreed!=0 */ }; struct LookasideSlot { LookasideSlot *pNext; /* Next buffer in the list of free buffers */ }; #define DisableLookaside db->lookaside.bDisable++;db->lookaside.sz=0 #define EnableLookaside db->lookaside.bDisable--;\ db->lookaside.sz=db->lookaside.bDisable?0:db->lookaside.szTrue /* Size of the smaller allocations in two-size lookaside */ #ifdef SQLITE_OMIT_TWOSIZE_LOOKASIDE # define LOOKASIDE_SMALL 0 #else # define LOOKASIDE_SMALL 128 #endif /* ** A hash table for built-in function definitions. (Application-defined ** functions use a regular table table from hash.h.) ** ** Hash each FuncDef structure into one of the FuncDefHash.a[] slots. ** Collisions are on the FuncDef.u.pHash chain. Use the SQLITE_FUNC_HASH() ** macro to compute a hash on the function name. */ #define SQLITE_FUNC_HASH_SZ 23 struct FuncDefHash { FuncDef *a[SQLITE_FUNC_HASH_SZ]; /* Hash table for functions */ }; #define SQLITE_FUNC_HASH(C,L) (((C)+(L))%SQLITE_FUNC_HASH_SZ) /* ** typedef for the authorization callback function. */ typedef int (*sqlite3_xauth)(void*,int,const char*,const char*,const char*, const char*); #ifndef SQLITE_OMIT_DEPRECATED /* This is an extra SQLITE_TRACE macro that indicates "legacy" tracing ** in the style of sqlite3_trace() */ #define SQLITE_TRACE_LEGACY 0x40 /* Use the legacy xTrace */ #define SQLITE_TRACE_XPROFILE 0x80 /* Use the legacy xProfile */ #else #define SQLITE_TRACE_LEGACY 0 #define SQLITE_TRACE_XPROFILE 0 #endif /* SQLITE_OMIT_DEPRECATED */ #define SQLITE_TRACE_NONLEGACY_MASK 0x0f /* Normal flags */ /* ** Maximum number of sqlite3.aDb[] entries. This is the number of attached ** databases plus 2 for "main" and "temp". */ #define SQLITE_MAX_DB (SQLITE_MAX_ATTACHED+2) /* ** Each database connection is an instance of the following structure. */ struct sqlite3 { sqlite3_vfs *pVfs; /* OS Interface */ struct Vdbe *pVdbe; /* List of active virtual machines */ CollSeq *pDfltColl; /* BINARY collseq for the database encoding */ sqlite3_mutex *mutex; /* Connection mutex */ Db *aDb; /* All backends */ int nDb; /* Number of backends currently in use */ u32 mDbFlags; /* flags recording internal state */ u64 flags; /* flags settable by pragmas. See below */ i64 lastRowid; /* ROWID of most recent insert (see above) */ i64 szMmap; /* Default mmap_size setting */ u32 nSchemaLock; /* Do not reset the schema when non-zero */ unsigned int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */ int errCode; /* Most recent error code (SQLITE_*) */ int errByteOffset; /* Byte offset of error in SQL statement */ int errMask; /* & result codes with this before returning */ int iSysErrno; /* Errno value from last system error */ u32 dbOptFlags; /* Flags to enable/disable optimizations */ u8 enc; /* Text encoding */ u8 autoCommit; /* The auto-commit flag. */ u8 temp_store; /* 1: file 2: memory 0: default */ u8 mallocFailed; /* True if we have seen a malloc failure */ u8 bBenignMalloc; /* Do not require OOMs if true */ u8 dfltLockMode; /* Default locking-mode for attached dbs */ signed char nextAutovac; /* Autovac setting after VACUUM if >=0 */ u8 suppressErr; /* Do not issue error messages if true */ u8 vtabOnConflict; /* Value to return for s3_vtab_on_conflict() */ u8 isTransactionSavepoint; /* True if the outermost savepoint is a TS */ u8 mTrace; /* zero or more SQLITE_TRACE flags */ u8 noSharedCache; /* True if no shared-cache backends */ u8 nSqlExec; /* Number of pending OP_SqlExec opcodes */ u8 eOpenState; /* Current condition of the connection */ int nextPagesize; /* Pagesize after VACUUM if >0 */ i64 nChange; /* Value returned by sqlite3_changes() */ i64 nTotalChange; /* Value returned by sqlite3_total_changes() */ int aLimit[SQLITE_N_LIMIT]; /* Limits */ int nMaxSorterMmap; /* Maximum size of regions mapped by sorter */ struct sqlite3InitInfo { /* Information used during initialization */ Pgno newTnum; /* Rootpage of table being initialized */ u8 iDb; /* Which db file is being initialized */ u8 busy; /* TRUE if currently initializing */ unsigned orphanTrigger : 1; /* Last statement is orphaned TEMP trigger */ unsigned imposterTable : 1; /* Building an imposter table */ unsigned reopenMemdb : 1; /* ATTACH is really a reopen using MemDB */ const char **azInit; /* "type", "name", and "tbl_name" columns */ } init; int nVdbeActive; /* Number of VDBEs currently running */ int nVdbeRead; /* Number of active VDBEs that read or write */ int nVdbeWrite; /* Number of active VDBEs that read and write */ int nVdbeExec; /* Number of nested calls to VdbeExec() */ int nVDestroy; /* Number of active OP_VDestroy operations */ int nExtension; /* Number of loaded extensions */ void **aExtension; /* Array of shared library handles */ union { void (*xLegacy)(void*,const char*); /* mTrace==SQLITE_TRACE_LEGACY */ int (*xV2)(u32,void*,void*,void*); /* All other mTrace values */ } trace; void *pTraceArg; /* Argument to the trace function */ #ifndef SQLITE_OMIT_DEPRECATED void (*xProfile)(void*,const char*,u64); /* Profiling function */ void *pProfileArg; /* Argument to profile function */ #endif void *pCommitArg; /* Argument to xCommitCallback() */ int (*xCommitCallback)(void*); /* Invoked at every commit. */ void *pRollbackArg; /* Argument to xRollbackCallback() */ void (*xRollbackCallback)(void*); /* Invoked at every commit. */ void *pUpdateArg; void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64); void *pAutovacPagesArg; /* Client argument to autovac_pages */ void (*xAutovacDestr)(void*); /* Destructor for pAutovacPAgesArg */ unsigned int (*xAutovacPages)(void*,const char*,u32,u32,u32); Parse *pParse; /* Current parse */ #ifdef SQLITE_ENABLE_PREUPDATE_HOOK void *pPreUpdateArg; /* First argument to xPreUpdateCallback */ void (*xPreUpdateCallback)( /* Registered using sqlite3_preupdate_hook() */ void*,sqlite3*,int,char const*,char const*,sqlite3_int64,sqlite3_int64 ); PreUpdate *pPreUpdate; /* Context for active pre-update callback */ #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ #ifndef SQLITE_OMIT_WAL int (*xWalCallback)(void *, sqlite3 *, const char *, int); void *pWalArg; #endif void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*); void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*); void *pCollNeededArg; sqlite3_value *pErr; /* Most recent error message */ union { volatile int isInterrupted; /* True if sqlite3_interrupt has been called */ double notUsed1; /* Spacer */ } u1; Lookaside lookaside; /* Lookaside malloc configuration */ #ifndef SQLITE_OMIT_AUTHORIZATION sqlite3_xauth xAuth; /* Access authorization function */ void *pAuthArg; /* 1st argument to the access auth function */ #endif #ifndef SQLITE_OMIT_PROGRESS_CALLBACK int (*xProgress)(void *); /* The progress callback */ void *pProgressArg; /* Argument to the progress callback */ unsigned nProgressOps; /* Number of opcodes for progress callback */ #endif #ifndef SQLITE_OMIT_VIRTUALTABLE int nVTrans; /* Allocated size of aVTrans */ Hash aModule; /* populated by sqlite3_create_module() */ VtabCtx *pVtabCtx; /* Context for active vtab connect/create */ VTable **aVTrans; /* Virtual tables with open transactions */ VTable *pDisconnect; /* Disconnect these in next sqlite3_prepare() */ #endif Hash aFunc; /* Hash table of connection functions */ Hash aCollSeq; /* All collating sequences */ BusyHandler busyHandler; /* Busy callback */ Db aDbStatic[2]; /* Static space for the 2 default backends */ Savepoint *pSavepoint; /* List of active savepoints */ int nAnalysisLimit; /* Number of index rows to ANALYZE */ int busyTimeout; /* Busy handler timeout, in msec */ int nSavepoint; /* Number of non-transaction savepoints */ int nStatement; /* Number of nested statement-transactions */ i64 nDeferredCons; /* Net deferred constraints this transaction. */ i64 nDeferredImmCons; /* Net deferred immediate constraints */ int *pnBytesFreed; /* If not NULL, increment this in DbFree() */ DbClientData *pDbData; /* sqlite3_set_clientdata() content */ #ifdef SQLITE_ENABLE_UNLOCK_NOTIFY /* The following variables are all protected by the STATIC_MAIN ** mutex, not by sqlite3.mutex. They are used by code in notify.c. ** ** When X.pUnlockConnection==Y, that means that X is waiting for Y to ** unlock so that it can proceed. ** ** When X.pBlockingConnection==Y, that means that something that X tried ** tried to do recently failed with an SQLITE_LOCKED error due to locks ** held by Y. */ sqlite3 *pBlockingConnection; /* Connection that caused SQLITE_LOCKED */ sqlite3 *pUnlockConnection; /* Connection to watch for unlock */ void *pUnlockArg; /* Argument to xUnlockNotify */ void (*xUnlockNotify)(void **, int); /* Unlock notify callback */ sqlite3 *pNextBlocked; /* Next in list of all blocked connections */ #endif }; /* ** A macro to discover the encoding of a database. */ #define SCHEMA_ENC(db) ((db)->aDb[0].pSchema->enc) #define ENC(db) ((db)->enc) /* ** A u64 constant where the lower 32 bits are all zeros. Only the ** upper 32 bits are included in the argument. Necessary because some ** C-compilers still do not accept LL integer literals. */ #define HI(X) ((u64)(X)<<32) /* ** Possible values for the sqlite3.flags. ** ** Value constraints (enforced via assert()): ** SQLITE_FullFSync == PAGER_FULLFSYNC ** SQLITE_CkptFullFSync == PAGER_CKPT_FULLFSYNC ** SQLITE_CacheSpill == PAGER_CACHE_SPILL */ #define SQLITE_WriteSchema 0x00000001 /* OK to update SQLITE_SCHEMA */ #define SQLITE_LegacyFileFmt 0x00000002 /* Create new databases in format 1 */ #define SQLITE_FullColNames 0x00000004 /* Show full column names on SELECT */ #define SQLITE_FullFSync 0x00000008 /* Use full fsync on the backend */ #define SQLITE_CkptFullFSync 0x00000010 /* Use full fsync for checkpoint */ #define SQLITE_CacheSpill 0x00000020 /* OK to spill pager cache */ #define SQLITE_ShortColNames 0x00000040 /* Show short columns names */ #define SQLITE_TrustedSchema 0x00000080 /* Allow unsafe functions and ** vtabs in the schema definition */ #define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */ /* result set is empty */ #define SQLITE_IgnoreChecks 0x00000200 /* Do not enforce check constraints */ #define SQLITE_StmtScanStatus 0x00000400 /* Enable stmt_scanstats() counters */ #define SQLITE_NoCkptOnClose 0x00000800 /* No checkpoint on close()/DETACH */ #define SQLITE_ReverseOrder 0x00001000 /* Reverse unordered SELECTs */ #define SQLITE_RecTriggers 0x00002000 /* Enable recursive triggers */ #define SQLITE_ForeignKeys 0x00004000 /* Enforce foreign key constraints */ #define SQLITE_AutoIndex 0x00008000 /* Enable automatic indexes */ #define SQLITE_LoadExtension 0x00010000 /* Enable load_extension */ #define SQLITE_LoadExtFunc 0x00020000 /* Enable load_extension() SQL func */ #define SQLITE_EnableTrigger 0x00040000 /* True to enable triggers */ #define SQLITE_DeferFKs 0x00080000 /* Defer all FK constraints */ #define SQLITE_QueryOnly 0x00100000 /* Disable database changes */ #define SQLITE_CellSizeCk 0x00200000 /* Check btree cell sizes on load */ #define SQLITE_Fts3Tokenizer 0x00400000 /* Enable fts3_tokenizer(2) */ #define SQLITE_EnableQPSG 0x00800000 /* Query Planner Stability Guarantee*/ #define SQLITE_TriggerEQP 0x01000000 /* Show trigger EXPLAIN QUERY PLAN */ #define SQLITE_ResetDatabase 0x02000000 /* Reset the database */ #define SQLITE_LegacyAlter 0x04000000 /* Legacy ALTER TABLE behaviour */ #define SQLITE_NoSchemaError 0x08000000 /* Do not report schema parse errors*/ #define SQLITE_Defensive 0x10000000 /* Input SQL is likely hostile */ #define SQLITE_DqsDDL 0x20000000 /* dbl-quoted strings allowed in DDL*/ #define SQLITE_DqsDML 0x40000000 /* dbl-quoted strings allowed in DML*/ #define SQLITE_EnableView 0x80000000 /* Enable the use of views */ #define SQLITE_CountRows HI(0x00001) /* Count rows changed by INSERT, */ /* DELETE, or UPDATE and return */ /* the count using a callback. */ #define SQLITE_CorruptRdOnly HI(0x00002) /* Prohibit writes due to error */ #define SQLITE_ReadUncommit HI(0x00004) /* READ UNCOMMITTED in shared-cache */ #define SQLITE_FkNoAction HI(0x00008) /* Treat all FK as NO ACTION */ #define SQLITE_AttachCreate HI(0x00010) /* ATTACH allowed to create new dbs */ #define SQLITE_AttachWrite HI(0x00020) /* ATTACH allowed to open for write */ #define SQLITE_Comments HI(0x00040) /* Enable SQL comments */ /* Flags used only if debugging */ #ifdef SQLITE_DEBUG #define SQLITE_SqlTrace HI(0x0100000) /* Debug print SQL as it executes */ #define SQLITE_VdbeListing HI(0x0200000) /* Debug listings of VDBE progs */ #define SQLITE_VdbeTrace HI(0x0400000) /* True to trace VDBE execution */ #define SQLITE_VdbeAddopTrace HI(0x0800000) /* Trace sqlite3VdbeAddOp() calls */ #define SQLITE_VdbeEQP HI(0x1000000) /* Debug EXPLAIN QUERY PLAN */ #define SQLITE_ParserTrace HI(0x2000000) /* PRAGMA parser_trace=ON */ #endif /* ** Allowed values for sqlite3.mDbFlags */ #define DBFLAG_SchemaChange 0x0001 /* Uncommitted Hash table changes */ #define DBFLAG_PreferBuiltin 0x0002 /* Preference to built-in funcs */ #define DBFLAG_Vacuum 0x0004 /* Currently in a VACUUM */ #define DBFLAG_VacuumInto 0x0008 /* Currently running VACUUM INTO */ #define DBFLAG_SchemaKnownOk 0x0010 /* Schema is known to be valid */ #define DBFLAG_InternalFunc 0x0020 /* Allow use of internal functions */ #define DBFLAG_EncodingFixed 0x0040 /* No longer possible to change enc. */ /* ** Bits of the sqlite3.dbOptFlags field that are used by the ** sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS,...) interface to ** selectively disable various optimizations. */ #define SQLITE_QueryFlattener 0x00000001 /* Query flattening */ #define SQLITE_WindowFunc 0x00000002 /* Use xInverse for window functions */ #define SQLITE_GroupByOrder 0x00000004 /* GROUPBY cover of ORDERBY */ #define SQLITE_FactorOutConst 0x00000008 /* Constant factoring */ #define SQLITE_DistinctOpt 0x00000010 /* DISTINCT using indexes */ #define SQLITE_CoverIdxScan 0x00000020 /* Covering index scans */ #define SQLITE_OrderByIdxJoin 0x00000040 /* ORDER BY of joins via index */ #define SQLITE_Transitive 0x00000080 /* Transitive constraints */ #define SQLITE_OmitNoopJoin 0x00000100 /* Omit unused tables in joins */ #define SQLITE_CountOfView 0x00000200 /* The count-of-view optimization */ #define SQLITE_CursorHints 0x00000400 /* Add OP_CursorHint opcodes */ #define SQLITE_Stat4 0x00000800 /* Use STAT4 data */ /* TH3 expects this value ^^^^^^^^^^ to be 0x0000800. Don't change it */ #define SQLITE_PushDown 0x00001000 /* WHERE-clause push-down opt */ #define SQLITE_SimplifyJoin 0x00002000 /* Convert LEFT JOIN to JOIN */ #define SQLITE_SkipScan 0x00004000 /* Skip-scans */ #define SQLITE_PropagateConst 0x00008000 /* The constant propagation opt */ #define SQLITE_MinMaxOpt 0x00010000 /* The min/max optimization */ #define SQLITE_SeekScan 0x00020000 /* The OP_SeekScan optimization */ #define SQLITE_OmitOrderBy 0x00040000 /* Omit pointless ORDER BY */ /* TH3 expects this value ^^^^^^^^^^ to be 0x40000. Coordinate any change */ #define SQLITE_BloomFilter 0x00080000 /* Use a Bloom filter on searches */ #define SQLITE_BloomPulldown 0x00100000 /* Run Bloom filters early */ #define SQLITE_BalancedMerge 0x00200000 /* Balance multi-way merges */ #define SQLITE_ReleaseReg 0x00400000 /* Use OP_ReleaseReg for testing */ #define SQLITE_FlttnUnionAll 0x00800000 /* Disable the UNION ALL flattener */ /* TH3 expects this value ^^^^^^^^^^ See flatten04.test */ #define SQLITE_IndexedExpr 0x01000000 /* Pull exprs from index when able */ #define SQLITE_Coroutines 0x02000000 /* Co-routines for subqueries */ #define SQLITE_NullUnusedCols 0x04000000 /* NULL unused columns in subqueries */ #define SQLITE_OnePass 0x08000000 /* Single-pass DELETE and UPDATE */ #define SQLITE_OrderBySubq 0x10000000 /* ORDER BY in subquery helps outer */ #define SQLITE_StarQuery 0x20000000 /* Heurists for star queries */ #define SQLITE_AllOpts 0xffffffff /* All optimizations */ /* ** Macros for testing whether or not optimizations are enabled or disabled. */ #define OptimizationDisabled(db, mask) (((db)->dbOptFlags&(mask))!=0) #define OptimizationEnabled(db, mask) (((db)->dbOptFlags&(mask))==0) /* ** Return true if it OK to factor constant expressions into the initialization ** code. The argument is a Parse object for the code generator. */ #define ConstFactorOk(P) ((P)->okConstFactor) /* Possible values for the sqlite3.eOpenState field. ** The numbers are randomly selected such that a minimum of three bits must ** change to convert any number to another or to zero */ #define SQLITE_STATE_OPEN 0x76 /* Database is open */ #define SQLITE_STATE_CLOSED 0xce /* Database is closed */ #define SQLITE_STATE_SICK 0xba /* Error and awaiting close */ #define SQLITE_STATE_BUSY 0x6d /* Database currently in use */ #define SQLITE_STATE_ERROR 0xd5 /* An SQLITE_MISUSE error occurred */ #define SQLITE_STATE_ZOMBIE 0xa7 /* Close with last statement close */ /* ** Each SQL function is defined by an instance of the following ** structure. For global built-in functions (ex: substr(), max(), count()) ** a pointer to this structure is held in the sqlite3BuiltinFunctions object. ** For per-connection application-defined functions, a pointer to this ** structure is held in the db->aHash hash table. ** ** The u.pHash field is used by the global built-ins. The u.pDestructor ** field is used by per-connection app-def functions. */ struct FuncDef { i16 nArg; /* Number of arguments. -1 means unlimited */ u32 funcFlags; /* Some combination of SQLITE_FUNC_* */ void *pUserData; /* User data parameter */ FuncDef *pNext; /* Next function with same name */ void (*xSFunc)(sqlite3_context*,int,sqlite3_value**); /* func or agg-step */ void (*xFinalize)(sqlite3_context*); /* Agg finalizer */ void (*xValue)(sqlite3_context*); /* Current agg value */ void (*xInverse)(sqlite3_context*,int,sqlite3_value**); /* inverse agg-step */ const char *zName; /* SQL name of the function. */ union { FuncDef *pHash; /* Next with a different name but the same hash */ FuncDestructor *pDestructor; /* Reference counted destructor function */ } u; /* pHash if SQLITE_FUNC_BUILTIN, pDestructor otherwise */ }; /* ** This structure encapsulates a user-function destructor callback (as ** configured using create_function_v2()) and a reference counter. When ** create_function_v2() is called to create a function with a destructor, ** a single object of this type is allocated. FuncDestructor.nRef is set to ** the number of FuncDef objects created (either 1 or 3, depending on whether ** or not the specified encoding is SQLITE_ANY). The FuncDef.pDestructor ** member of each of the new FuncDef objects is set to point to the allocated ** FuncDestructor. ** ** Thereafter, when one of the FuncDef objects is deleted, the reference ** count on this object is decremented. When it reaches 0, the destructor ** is invoked and the FuncDestructor structure freed. */ struct FuncDestructor { int nRef; void (*xDestroy)(void *); void *pUserData; }; /* ** Possible values for FuncDef.flags. Note that the _LENGTH and _TYPEOF ** values must correspond to OPFLAG_LENGTHARG and OPFLAG_TYPEOFARG. And ** SQLITE_FUNC_CONSTANT must be the same as SQLITE_DETERMINISTIC. There ** are assert() statements in the code to verify this. ** ** Value constraints (enforced via assert()): ** SQLITE_FUNC_MINMAX == NC_MinMaxAgg == SF_MinMaxAgg ** SQLITE_FUNC_ANYORDER == NC_OrderAgg == SF_OrderByReqd ** SQLITE_FUNC_LENGTH == OPFLAG_LENGTHARG ** SQLITE_FUNC_TYPEOF == OPFLAG_TYPEOFARG ** SQLITE_FUNC_BYTELEN == OPFLAG_BYTELENARG ** SQLITE_FUNC_CONSTANT == SQLITE_DETERMINISTIC from the API ** SQLITE_FUNC_DIRECT == SQLITE_DIRECTONLY from the API ** SQLITE_FUNC_UNSAFE == SQLITE_INNOCUOUS -- opposite meanings!!! ** SQLITE_FUNC_ENCMASK depends on SQLITE_UTF* macros in the API ** ** Note that even though SQLITE_FUNC_UNSAFE and SQLITE_INNOCUOUS have the ** same bit value, their meanings are inverted. SQLITE_FUNC_UNSAFE is ** used internally and if set means that the function has side effects. ** SQLITE_INNOCUOUS is used by application code and means "not unsafe". ** See multiple instances of tag-20230109-1. */ #define SQLITE_FUNC_ENCMASK 0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */ #define SQLITE_FUNC_LIKE 0x0004 /* Candidate for the LIKE optimization */ #define SQLITE_FUNC_CASE 0x0008 /* Case-sensitive LIKE-type function */ #define SQLITE_FUNC_EPHEM 0x0010 /* Ephemeral. Delete with VDBE */ #define SQLITE_FUNC_NEEDCOLL 0x0020 /* sqlite3GetFuncCollSeq() might be called*/ #define SQLITE_FUNC_LENGTH 0x0040 /* Built-in length() function */ #define SQLITE_FUNC_TYPEOF 0x0080 /* Built-in typeof() function */ #define SQLITE_FUNC_BYTELEN 0x00c0 /* Built-in octet_length() function */ #define SQLITE_FUNC_COUNT 0x0100 /* Built-in count(*) aggregate */ /* 0x0200 -- available for reuse */ #define SQLITE_FUNC_UNLIKELY 0x0400 /* Built-in unlikely() function */ #define SQLITE_FUNC_CONSTANT 0x0800 /* Constant inputs give a constant output */ #define SQLITE_FUNC_MINMAX 0x1000 /* True for min() and max() aggregates */ #define SQLITE_FUNC_SLOCHNG 0x2000 /* "Slow Change". Value constant during a ** single query - might change over time */ #define SQLITE_FUNC_TEST 0x4000 /* Built-in testing functions */ #define SQLITE_FUNC_RUNONLY 0x8000 /* Cannot be used by valueFromFunction */ #define SQLITE_FUNC_WINDOW 0x00010000 /* Built-in window-only function */ #define SQLITE_FUNC_INTERNAL 0x00040000 /* For use by NestedParse() only */ #define SQLITE_FUNC_DIRECT 0x00080000 /* Not for use in TRIGGERs or VIEWs */ /* SQLITE_SUBTYPE 0x00100000 // Consumer of subtypes */ #define SQLITE_FUNC_UNSAFE 0x00200000 /* Function has side effects */ #define SQLITE_FUNC_INLINE 0x00400000 /* Functions implemented in-line */ #define SQLITE_FUNC_BUILTIN 0x00800000 /* This is a built-in function */ /* SQLITE_RESULT_SUBTYPE 0x01000000 // Generator of subtypes */ #define SQLITE_FUNC_ANYORDER 0x08000000 /* count/min/max aggregate */ /* Identifier numbers for each in-line function */ #define INLINEFUNC_coalesce 0 #define INLINEFUNC_implies_nonnull_row 1 #define INLINEFUNC_expr_implies_expr 2 #define INLINEFUNC_expr_compare 3 #define INLINEFUNC_affinity 4 #define INLINEFUNC_iif 5 #define INLINEFUNC_sqlite_offset 6 #define INLINEFUNC_unlikely 99 /* Default case */ /* ** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are ** used to create the initializers for the FuncDef structures. ** ** FUNCTION(zName, nArg, iArg, bNC, xFunc) ** Used to create a scalar function definition of a function zName ** implemented by C function xFunc that accepts nArg arguments. The ** value passed as iArg is cast to a (void*) and made available ** as the user-data (sqlite3_user_data()) for the function. If ** argument bNC is true, then the SQLITE_FUNC_NEEDCOLL flag is set. ** ** VFUNCTION(zName, nArg, iArg, bNC, xFunc) ** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag. ** ** SFUNCTION(zName, nArg, iArg, bNC, xFunc) ** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and ** adds the SQLITE_DIRECTONLY flag. ** ** INLINE_FUNC(zName, nArg, iFuncId, mFlags) ** zName is the name of a function that is implemented by in-line ** byte code rather than by the usual callbacks. The iFuncId ** parameter determines the function id. The mFlags parameter is ** optional SQLITE_FUNC_ flags for this function. ** ** TEST_FUNC(zName, nArg, iFuncId, mFlags) ** zName is the name of a test-only function implemented by in-line ** byte code rather than by the usual callbacks. The iFuncId ** parameter determines the function id. The mFlags parameter is ** optional SQLITE_FUNC_ flags for this function. ** ** DFUNCTION(zName, nArg, iArg, bNC, xFunc) ** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and ** adds the SQLITE_FUNC_SLOCHNG flag. Used for date & time functions ** and functions like sqlite_version() that can change, but not during ** a single query. The iArg is ignored. The user-data is always set ** to a NULL pointer. The bNC parameter is not used. ** ** MFUNCTION(zName, nArg, xPtr, xFunc) ** For math-library functions. xPtr is an arbitrary pointer. ** ** PURE_DATE(zName, nArg, iArg, bNC, xFunc) ** Used for "pure" date/time functions, this macro is like DFUNCTION ** except that it does set the SQLITE_FUNC_CONSTANT flags. iArg is ** ignored and the user-data for these functions is set to an ** arbitrary non-NULL pointer. The bNC parameter is not used. ** ** AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal) ** Used to create an aggregate function definition implemented by ** the C functions xStep and xFinal. The first four parameters ** are interpreted in the same way as the first 4 parameters to ** FUNCTION(). ** ** WAGGREGATE(zName, nArg, iArg, xStep, xFinal, xValue, xInverse) ** Used to create an aggregate function definition implemented by ** the C functions xStep and xFinal. The first four parameters ** are interpreted in the same way as the first 4 parameters to ** FUNCTION(). ** ** LIKEFUNC(zName, nArg, pArg, flags) ** Used to create a scalar function definition of a function zName ** that accepts nArg arguments and is implemented by a call to C ** function likeFunc. Argument pArg is cast to a (void *) and made ** available as the function user-data (sqlite3_user_data()). The ** FuncDef.flags variable is set to the value passed as the flags ** parameter. */ #define FUNCTION(zName, nArg, iArg, bNC, xFunc) \ {nArg, SQLITE_FUNC_BUILTIN|\ SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} } #define VFUNCTION(zName, nArg, iArg, bNC, xFunc) \ {nArg, SQLITE_FUNC_BUILTIN|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} } #define SFUNCTION(zName, nArg, iArg, bNC, xFunc) \ {nArg, SQLITE_FUNC_BUILTIN|SQLITE_UTF8|SQLITE_DIRECTONLY|SQLITE_FUNC_UNSAFE, \ SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} } #define MFUNCTION(zName, nArg, xPtr, xFunc) \ {nArg, SQLITE_FUNC_BUILTIN|SQLITE_FUNC_CONSTANT|SQLITE_UTF8, \ xPtr, 0, xFunc, 0, 0, 0, #zName, {0} } #define JFUNCTION(zName, nArg, bUseCache, bWS, bRS, bJsonB, iArg, xFunc) \ {nArg, SQLITE_FUNC_BUILTIN|SQLITE_DETERMINISTIC|SQLITE_FUNC_CONSTANT|\ SQLITE_UTF8|((bUseCache)*SQLITE_FUNC_RUNONLY)|\ ((bRS)*SQLITE_SUBTYPE)|((bWS)*SQLITE_RESULT_SUBTYPE), \ SQLITE_INT_TO_PTR(iArg|((bJsonB)*JSON_BLOB)),0,xFunc,0, 0, 0, #zName, {0} } #define INLINE_FUNC(zName, nArg, iArg, mFlags) \ {nArg, SQLITE_FUNC_BUILTIN|\ SQLITE_UTF8|SQLITE_FUNC_INLINE|SQLITE_FUNC_CONSTANT|(mFlags), \ SQLITE_INT_TO_PTR(iArg), 0, noopFunc, 0, 0, 0, #zName, {0} } #define TEST_FUNC(zName, nArg, iArg, mFlags) \ {nArg, SQLITE_FUNC_BUILTIN|\ SQLITE_UTF8|SQLITE_FUNC_INTERNAL|SQLITE_FUNC_TEST| \ SQLITE_FUNC_INLINE|SQLITE_FUNC_CONSTANT|(mFlags), \ SQLITE_INT_TO_PTR(iArg), 0, noopFunc, 0, 0, 0, #zName, {0} } #define DFUNCTION(zName, nArg, iArg, bNC, xFunc) \ {nArg, SQLITE_FUNC_BUILTIN|SQLITE_FUNC_SLOCHNG|SQLITE_UTF8, \ 0, 0, xFunc, 0, 0, 0, #zName, {0} } #define PURE_DATE(zName, nArg, iArg, bNC, xFunc) \ {nArg, SQLITE_FUNC_BUILTIN|\ SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|SQLITE_FUNC_CONSTANT, \ (void*)&sqlite3Config, 0, xFunc, 0, 0, 0, #zName, {0} } #define FUNCTION2(zName, nArg, iArg, bNC, xFunc, extraFlags) \ {nArg, SQLITE_FUNC_BUILTIN|\ SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL)|extraFlags,\ SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} } #define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \ {nArg, SQLITE_FUNC_BUILTIN|\ SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ pArg, 0, xFunc, 0, 0, 0, #zName, } #define LIKEFUNC(zName, nArg, arg, flags) \ {nArg, SQLITE_FUNC_BUILTIN|SQLITE_FUNC_CONSTANT|SQLITE_UTF8|flags, \ (void *)arg, 0, likeFunc, 0, 0, 0, #zName, {0} } #define WAGGREGATE(zName, nArg, arg, nc, xStep, xFinal, xValue, xInverse, f) \ {nArg, SQLITE_FUNC_BUILTIN|SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|f, \ SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,xValue,xInverse,#zName, {0}} #define INTERNAL_FUNCTION(zName, nArg, xFunc) \ {nArg, SQLITE_FUNC_BUILTIN|\ SQLITE_FUNC_INTERNAL|SQLITE_UTF8|SQLITE_FUNC_CONSTANT, \ 0, 0, xFunc, 0, 0, 0, #zName, {0} } /* ** All current savepoints are stored in a linked list starting at ** sqlite3.pSavepoint. The first element in the list is the most recently ** opened savepoint. Savepoints are added to the list by the vdbe ** OP_Savepoint instruction. */ struct Savepoint { char *zName; /* Savepoint name (nul-terminated) */ i64 nDeferredCons; /* Number of deferred fk violations */ i64 nDeferredImmCons; /* Number of deferred imm fk. */ Savepoint *pNext; /* Parent savepoint (if any) */ }; /* ** The following are used as the second parameter to sqlite3Savepoint(), ** and as the P1 argument to the OP_Savepoint instruction. */ #define SAVEPOINT_BEGIN 0 #define SAVEPOINT_RELEASE 1 #define SAVEPOINT_ROLLBACK 2 /* ** Each SQLite module (virtual table definition) is defined by an ** instance of the following structure, stored in the sqlite3.aModule ** hash table. */ struct Module { const sqlite3_module *pModule; /* Callback pointers */ const char *zName; /* Name passed to create_module() */ int nRefModule; /* Number of pointers to this object */ void *pAux; /* pAux passed to create_module() */ void (*xDestroy)(void *); /* Module destructor function */ Table *pEpoTab; /* Eponymous table for this module */ }; /* ** Information about each column of an SQL table is held in an instance ** of the Column structure, in the Table.aCol[] array. ** ** Definitions: ** ** "table column index" This is the index of the column in the ** Table.aCol[] array, and also the index of ** the column in the original CREATE TABLE stmt. ** ** "storage column index" This is the index of the column in the ** record BLOB generated by the OP_MakeRecord ** opcode. The storage column index is less than ** or equal to the table column index. It is ** equal if and only if there are no VIRTUAL ** columns to the left. ** ** Notes on zCnName: ** The zCnName field stores the name of the column, the datatype of the ** column, and the collating sequence for the column, in that order, all in ** a single allocation. Each string is 0x00 terminated. The datatype ** is only included if the COLFLAG_HASTYPE bit of colFlags is set and the ** collating sequence name is only included if the COLFLAG_HASCOLL bit is ** set. */ struct Column { char *zCnName; /* Name of this column */ unsigned notNull :4; /* An OE_ code for handling a NOT NULL constraint */ unsigned eCType :4; /* One of the standard types */ char affinity; /* One of the SQLITE_AFF_... values */ u8 szEst; /* Est size of value in this column. sizeof(INT)==1 */ u8 hName; /* Column name hash for faster lookup */ u16 iDflt; /* 1-based index of DEFAULT. 0 means "none" */ u16 colFlags; /* Boolean properties. See COLFLAG_ defines below */ }; /* Allowed values for Column.eCType. ** ** Values must match entries in the global constant arrays ** sqlite3StdTypeLen[] and sqlite3StdType[]. Each value is one more ** than the offset into these arrays for the corresponding name. ** Adjust the SQLITE_N_STDTYPE value if adding or removing entries. */ #define COLTYPE_CUSTOM 0 /* Type appended to zName */ #define COLTYPE_ANY 1 #define COLTYPE_BLOB 2 #define COLTYPE_INT 3 #define COLTYPE_INTEGER 4 #define COLTYPE_REAL 5 #define COLTYPE_TEXT 6 #define SQLITE_N_STDTYPE 6 /* Number of standard types */ /* Allowed values for Column.colFlags. ** ** Constraints: ** TF_HasVirtual == COLFLAG_VIRTUAL ** TF_HasStored == COLFLAG_STORED ** TF_HasHidden == COLFLAG_HIDDEN */ #define COLFLAG_PRIMKEY 0x0001 /* Column is part of the primary key */ #define COLFLAG_HIDDEN 0x0002 /* A hidden column in a virtual table */ #define COLFLAG_HASTYPE 0x0004 /* Type name follows column name */ #define COLFLAG_UNIQUE 0x0008 /* Column def contains "UNIQUE" or "PK" */ #define COLFLAG_SORTERREF 0x0010 /* Use sorter-refs with this column */ #define COLFLAG_VIRTUAL 0x0020 /* GENERATED ALWAYS AS ... VIRTUAL */ #define COLFLAG_STORED 0x0040 /* GENERATED ALWAYS AS ... STORED */ #define COLFLAG_NOTAVAIL 0x0080 /* STORED column not yet calculated */ #define COLFLAG_BUSY 0x0100 /* Blocks recursion on GENERATED columns */ #define COLFLAG_HASCOLL 0x0200 /* Has collating sequence name in zCnName */ #define COLFLAG_NOEXPAND 0x0400 /* Omit this column when expanding "*" */ #define COLFLAG_GENERATED 0x0060 /* Combo: _STORED, _VIRTUAL */ #define COLFLAG_NOINSERT 0x0062 /* Combo: _HIDDEN, _STORED, _VIRTUAL */ /* ** A "Collating Sequence" is defined by an instance of the following ** structure. Conceptually, a collating sequence consists of a name and ** a comparison routine that defines the order of that sequence. ** ** If CollSeq.xCmp is NULL, it means that the ** collating sequence is undefined. Indices built on an undefined ** collating sequence may not be read or written. */ struct CollSeq { char *zName; /* Name of the collating sequence, UTF-8 encoded */ u8 enc; /* Text encoding handled by xCmp() */ void *pUser; /* First argument to xCmp() */ int (*xCmp)(void*,int, const void*, int, const void*); void (*xDel)(void*); /* Destructor for pUser */ }; /* ** A sort order can be either ASC or DESC. */ #define SQLITE_SO_ASC 0 /* Sort in ascending order */ #define SQLITE_SO_DESC 1 /* Sort in ascending order */ #define SQLITE_SO_UNDEFINED -1 /* No sort order specified */ /* ** Column affinity types. ** ** These used to have mnemonic name like 'i' for SQLITE_AFF_INTEGER and ** 't' for SQLITE_AFF_TEXT. But we can save a little space and improve ** the speed a little by numbering the values consecutively. ** ** But rather than start with 0 or 1, we begin with 'A'. That way, ** when multiple affinity types are concatenated into a string and ** used as the P4 operand, they will be more readable. ** ** Note also that the numeric types are grouped together so that testing ** for a numeric type is a single comparison. And the BLOB type is first. */ #define SQLITE_AFF_NONE 0x40 /* '@' */ #define SQLITE_AFF_BLOB 0x41 /* 'A' */ #define SQLITE_AFF_TEXT 0x42 /* 'B' */ #define SQLITE_AFF_NUMERIC 0x43 /* 'C' */ #define SQLITE_AFF_INTEGER 0x44 /* 'D' */ #define SQLITE_AFF_REAL 0x45 /* 'E' */ #define SQLITE_AFF_FLEXNUM 0x46 /* 'F' */ #define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC) /* ** The SQLITE_AFF_MASK values masks off the significant bits of an ** affinity value. */ #define SQLITE_AFF_MASK 0x47 /* ** Additional bit values that can be ORed with an affinity without ** changing the affinity. ** ** The SQLITE_NOTNULL flag is a combination of NULLEQ and JUMPIFNULL. ** It causes an assert() to fire if either operand to a comparison ** operator is NULL. It is added to certain comparison operators to ** prove that the operands are always NOT NULL. */ #define SQLITE_JUMPIFNULL 0x10 /* jumps if either operand is NULL */ #define SQLITE_NULLEQ 0x80 /* NULL=NULL */ #define SQLITE_NOTNULL 0x90 /* Assert that operands are never NULL */ /* ** An object of this type is created for each virtual table present in ** the database schema. ** ** If the database schema is shared, then there is one instance of this ** structure for each database connection (sqlite3*) that uses the shared ** schema. This is because each database connection requires its own unique ** instance of the sqlite3_vtab* handle used to access the virtual table ** implementation. sqlite3_vtab* handles can not be shared between ** database connections, even when the rest of the in-memory database ** schema is shared, as the implementation often stores the database ** connection handle passed to it via the xConnect() or xCreate() method ** during initialization internally. This database connection handle may ** then be used by the virtual table implementation to access real tables ** within the database. So that they appear as part of the callers ** transaction, these accesses need to be made via the same database ** connection as that used to execute SQL operations on the virtual table. ** ** All VTable objects that correspond to a single table in a shared ** database schema are initially stored in a linked-list pointed to by ** the Table.pVTable member variable of the corresponding Table object. ** When an sqlite3_prepare() operation is required to access the virtual ** table, it searches the list for the VTable that corresponds to the ** database connection doing the preparing so as to use the correct ** sqlite3_vtab* handle in the compiled query. ** ** When an in-memory Table object is deleted (for example when the ** schema is being reloaded for some reason), the VTable objects are not ** deleted and the sqlite3_vtab* handles are not xDisconnect()ed ** immediately. Instead, they are moved from the Table.pVTable list to ** another linked list headed by the sqlite3.pDisconnect member of the ** corresponding sqlite3 structure. They are then deleted/xDisconnected ** next time a statement is prepared using said sqlite3*. This is done ** to avoid deadlock issues involving multiple sqlite3.mutex mutexes. ** Refer to comments above function sqlite3VtabUnlockList() for an ** explanation as to why it is safe to add an entry to an sqlite3.pDisconnect ** list without holding the corresponding sqlite3.mutex mutex. ** ** The memory for objects of this type is always allocated by ** sqlite3DbMalloc(), using the connection handle stored in VTable.db as ** the first argument. */ struct VTable { sqlite3 *db; /* Database connection associated with this table */ Module *pMod; /* Pointer to module implementation */ sqlite3_vtab *pVtab; /* Pointer to vtab instance */ int nRef; /* Number of pointers to this structure */ u8 bConstraint; /* True if constraints are supported */ u8 bAllSchemas; /* True if might use any attached schema */ u8 eVtabRisk; /* Riskiness of allowing hacker access */ int iSavepoint; /* Depth of the SAVEPOINT stack */ VTable *pNext; /* Next in linked list (see above) */ }; /* Allowed values for VTable.eVtabRisk */ #define SQLITE_VTABRISK_Low 0 #define SQLITE_VTABRISK_Normal 1 #define SQLITE_VTABRISK_High 2 /* ** The schema for each SQL table, virtual table, and view is represented ** in memory by an instance of the following structure. */ struct Table { char *zName; /* Name of the table or view */ Column *aCol; /* Information about each column */ Index *pIndex; /* List of SQL indexes on this table. */ char *zColAff; /* String defining the affinity of each column */ ExprList *pCheck; /* All CHECK constraints */ /* ... also used as column name list in a VIEW */ Pgno tnum; /* Root BTree page for this table */ u32 nTabRef; /* Number of pointers to this Table */ u32 tabFlags; /* Mask of TF_* values */ i16 iPKey; /* If not negative, use aCol[iPKey] as the rowid */ i16 nCol; /* Number of columns in this table */ i16 nNVCol; /* Number of columns that are not VIRTUAL */ LogEst nRowLogEst; /* Estimated rows in table - from sqlite_stat1 table */ LogEst szTabRow; /* Estimated size of each table row in bytes */ #ifdef SQLITE_ENABLE_COSTMULT LogEst costMult; /* Cost multiplier for using this table */ #endif u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */ u8 eTabType; /* 0: normal, 1: virtual, 2: view */ union { struct { /* Used by ordinary tables: */ int addColOffset; /* Offset in CREATE TABLE stmt to add a new column */ FKey *pFKey; /* Linked list of all foreign keys in this table */ ExprList *pDfltList; /* DEFAULT clauses on various columns. ** Or the AS clause for generated columns. */ } tab; struct { /* Used by views: */ Select *pSelect; /* View definition */ } view; struct { /* Used by virtual tables only: */ int nArg; /* Number of arguments to the module */ char **azArg; /* 0: module 1: schema 2: vtab name 3...: args */ VTable *p; /* List of VTable objects. */ } vtab; } u; Trigger *pTrigger; /* List of triggers on this object */ Schema *pSchema; /* Schema that contains this table */ }; /* ** Allowed values for Table.tabFlags. ** ** TF_OOOHidden applies to tables or view that have hidden columns that are ** followed by non-hidden columns. Example: "CREATE VIRTUAL TABLE x USING ** vtab1(a HIDDEN, b);". Since "b" is a non-hidden column but "a" is hidden, ** the TF_OOOHidden attribute would apply in this case. Such tables require ** special handling during INSERT processing. The "OOO" means "Out Of Order". ** ** Constraints: ** ** TF_HasVirtual == COLFLAG_VIRTUAL ** TF_HasStored == COLFLAG_STORED ** TF_HasHidden == COLFLAG_HIDDEN */ #define TF_Readonly 0x00000001 /* Read-only system table */ #define TF_HasHidden 0x00000002 /* Has one or more hidden columns */ #define TF_HasPrimaryKey 0x00000004 /* Table has a primary key */ #define TF_Autoincrement 0x00000008 /* Integer primary key is autoincrement */ #define TF_HasStat1 0x00000010 /* nRowLogEst set from sqlite_stat1 */ #define TF_HasVirtual 0x00000020 /* Has one or more VIRTUAL columns */ #define TF_HasStored 0x00000040 /* Has one or more STORED columns */ #define TF_HasGenerated 0x00000060 /* Combo: HasVirtual + HasStored */ #define TF_WithoutRowid 0x00000080 /* No rowid. PRIMARY KEY is the key */ #define TF_MaybeReanalyze 0x00000100 /* Maybe run ANALYZE on this table */ #define TF_NoVisibleRowid 0x00000200 /* No user-visible "rowid" column */ #define TF_OOOHidden 0x00000400 /* Out-of-Order hidden columns */ #define TF_HasNotNull 0x00000800 /* Contains NOT NULL constraints */ #define TF_Shadow 0x00001000 /* True for a shadow table */ #define TF_HasStat4 0x00002000 /* STAT4 info available for this table */ #define TF_Ephemeral 0x00004000 /* An ephemeral table */ #define TF_Eponymous 0x00008000 /* An eponymous virtual table */ #define TF_Strict 0x00010000 /* STRICT mode */ /* ** Allowed values for Table.eTabType */ #define TABTYP_NORM 0 /* Ordinary table */ #define TABTYP_VTAB 1 /* Virtual table */ #define TABTYP_VIEW 2 /* A view */ #define IsView(X) ((X)->eTabType==TABTYP_VIEW) #define IsOrdinaryTable(X) ((X)->eTabType==TABTYP_NORM) /* ** Test to see whether or not a table is a virtual table. This is ** done as a macro so that it will be optimized out when virtual ** table support is omitted from the build. */ #ifndef SQLITE_OMIT_VIRTUALTABLE # define IsVirtual(X) ((X)->eTabType==TABTYP_VTAB) # define ExprIsVtab(X) \ ((X)->op==TK_COLUMN && (X)->y.pTab->eTabType==TABTYP_VTAB) #else # define IsVirtual(X) 0 # define ExprIsVtab(X) 0 #endif /* ** Macros to determine if a column is hidden. IsOrdinaryHiddenColumn() ** only works for non-virtual tables (ordinary tables and views) and is ** always false unless SQLITE_ENABLE_HIDDEN_COLUMNS is defined. The ** IsHiddenColumn() macro is general purpose. */ #if defined(SQLITE_ENABLE_HIDDEN_COLUMNS) # define IsHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) # define IsOrdinaryHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) #elif !defined(SQLITE_OMIT_VIRTUALTABLE) # define IsHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) # define IsOrdinaryHiddenColumn(X) 0 #else # define IsHiddenColumn(X) 0 # define IsOrdinaryHiddenColumn(X) 0 #endif /* Does the table have a rowid */ #define HasRowid(X) (((X)->tabFlags & TF_WithoutRowid)==0) #define VisibleRowid(X) (((X)->tabFlags & TF_NoVisibleRowid)==0) /* Macro is true if the SQLITE_ALLOW_ROWID_IN_VIEW (mis-)feature is ** available. By default, this macro is false */ #ifndef SQLITE_ALLOW_ROWID_IN_VIEW # define ViewCanHaveRowid 0 #else # define ViewCanHaveRowid (sqlite3Config.mNoVisibleRowid==0) #endif /* ** Each foreign key constraint is an instance of the following structure. ** ** A foreign key is associated with two tables. The "from" table is ** the table that contains the REFERENCES clause that creates the foreign ** key. The "to" table is the table that is named in the REFERENCES clause. ** Consider this example: ** ** CREATE TABLE ex1( ** a INTEGER PRIMARY KEY, ** b INTEGER CONSTRAINT fk1 REFERENCES ex2(x) ** ); ** ** For foreign key "fk1", the from-table is "ex1" and the to-table is "ex2". ** Equivalent names: ** ** from-table == child-table ** to-table == parent-table ** ** Each REFERENCES clause generates an instance of the following structure ** which is attached to the from-table. The to-table need not exist when ** the from-table is created. The existence of the to-table is not checked. ** ** The list of all parents for child Table X is held at X.pFKey. ** ** A list of all children for a table named Z (which might not even exist) ** is held in Schema.fkeyHash with a hash key of Z. */ struct FKey { Table *pFrom; /* Table containing the REFERENCES clause (aka: Child) */ FKey *pNextFrom; /* Next FKey with the same in pFrom. Next parent of pFrom */ char *zTo; /* Name of table that the key points to (aka: Parent) */ FKey *pNextTo; /* Next with the same zTo. Next child of zTo. */ FKey *pPrevTo; /* Previous with the same zTo */ int nCol; /* Number of columns in this key */ /* EV: R-30323-21917 */ u8 isDeferred; /* True if constraint checking is deferred till COMMIT */ u8 aAction[2]; /* ON DELETE and ON UPDATE actions, respectively */ Trigger *apTrigger[2];/* Triggers for aAction[] actions */ struct sColMap { /* Mapping of columns in pFrom to columns in zTo */ int iFrom; /* Index of column in pFrom */ char *zCol; /* Name of column in zTo. If NULL use PRIMARY KEY */ } aCol[1]; /* One entry for each of nCol columns */ }; /* ** SQLite supports many different ways to resolve a constraint ** error. ROLLBACK processing means that a constraint violation ** causes the operation in process to fail and for the current transaction ** to be rolled back. ABORT processing means the operation in process ** fails and any prior changes from that one operation are backed out, ** but the transaction is not rolled back. FAIL processing means that ** the operation in progress stops and returns an error code. But prior ** changes due to the same operation are not backed out and no rollback ** occurs. IGNORE means that the particular row that caused the constraint ** error is not inserted or updated. Processing continues and no error ** is returned. REPLACE means that preexisting database rows that caused ** a UNIQUE constraint violation are removed so that the new insert or ** update can proceed. Processing continues and no error is reported. ** UPDATE applies to insert operations only and means that the insert ** is omitted and the DO UPDATE clause of an upsert is run instead. ** ** RESTRICT, SETNULL, SETDFLT, and CASCADE actions apply only to foreign keys. ** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the ** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign ** key is set to NULL. SETDFLT means that the foreign key is set ** to its default value. CASCADE means that a DELETE or UPDATE of the ** referenced table row is propagated into the row that holds the ** foreign key. ** ** The OE_Default value is a place holder that means to use whatever ** conflict resolution algorithm is required from context. ** ** The following symbolic values are used to record which type ** of conflict resolution action to take. */ #define OE_None 0 /* There is no constraint to check */ #define OE_Rollback 1 /* Fail the operation and rollback the transaction */ #define OE_Abort 2 /* Back out changes but do no rollback transaction */ #define OE_Fail 3 /* Stop the operation but leave all prior changes */ #define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */ #define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */ #define OE_Update 6 /* Process as a DO UPDATE in an upsert */ #define OE_Restrict 7 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */ #define OE_SetNull 8 /* Set the foreign key value to NULL */ #define OE_SetDflt 9 /* Set the foreign key value to its default */ #define OE_Cascade 10 /* Cascade the changes */ #define OE_Default 11 /* Do whatever the default action is */ /* ** An instance of the following structure is passed as the first ** argument to sqlite3VdbeKeyCompare and is used to control the ** comparison of the two index keys. ** ** Note that aSortOrder[] and aColl[] have nField+1 slots. There ** are nField slots for the columns of an index then one extra slot ** for the rowid at the end. */ struct KeyInfo { u32 nRef; /* Number of references to this KeyInfo object */ u8 enc; /* Text encoding - one of the SQLITE_UTF* values */ u16 nKeyField; /* Number of key columns in the index */ u16 nAllField; /* Total columns, including key plus others */ sqlite3 *db; /* The database connection */ u8 *aSortFlags; /* Sort order for each column. */ CollSeq *aColl[1]; /* Collating sequence for each term of the key */ }; /* ** Allowed bit values for entries in the KeyInfo.aSortFlags[] array. */ #define KEYINFO_ORDER_DESC 0x01 /* DESC sort order */ #define KEYINFO_ORDER_BIGNULL 0x02 /* NULL is larger than any other value */ /* ** This object holds a record which has been parsed out into individual ** fields, for the purposes of doing a comparison. ** ** A record is an object that contains one or more fields of data. ** Records are used to store the content of a table row and to store ** the key of an index. A blob encoding of a record is created by ** the OP_MakeRecord opcode of the VDBE and is disassembled by the ** OP_Column opcode. ** ** An instance of this object serves as a "key" for doing a search on ** an index b+tree. The goal of the search is to find the entry that ** is closed to the key described by this object. This object might hold ** just a prefix of the key. The number of fields is given by ** pKeyInfo->nField. ** ** The r1 and r2 fields are the values to return if this key is less than ** or greater than a key in the btree, respectively. These are normally ** -1 and +1 respectively, but might be inverted to +1 and -1 if the b-tree ** is in DESC order. ** ** The key comparison functions actually return default_rc when they find ** an equals comparison. default_rc can be -1, 0, or +1. If there are ** multiple entries in the b-tree with the same key (when only looking ** at the first pKeyInfo->nFields,) then default_rc can be set to -1 to ** cause the search to find the last match, or +1 to cause the search to ** find the first match. ** ** The key comparison functions will set eqSeen to true if they ever ** get and equal results when comparing this structure to a b-tree record. ** When default_rc!=0, the search might end up on the record immediately ** before the first match or immediately after the last match. The ** eqSeen field will indicate whether or not an exact match exists in the ** b-tree. */ struct UnpackedRecord { KeyInfo *pKeyInfo; /* Collation and sort-order information */ Mem *aMem; /* Values */ union { char *z; /* Cache of aMem[0].z for vdbeRecordCompareString() */ i64 i; /* Cache of aMem[0].u.i for vdbeRecordCompareInt() */ } u; int n; /* Cache of aMem[0].n used by vdbeRecordCompareString() */ u16 nField; /* Number of entries in apMem[] */ i8 default_rc; /* Comparison result if keys are equal */ u8 errCode; /* Error detected by xRecordCompare (CORRUPT or NOMEM) */ i8 r1; /* Value to return if (lhs < rhs) */ i8 r2; /* Value to return if (lhs > rhs) */ u8 eqSeen; /* True if an equality comparison has been seen */ }; /* ** Each SQL index is represented in memory by an ** instance of the following structure. ** ** The columns of the table that are to be indexed are described ** by the aiColumn[] field of this structure. For example, suppose ** we have the following table and index: ** ** CREATE TABLE Ex1(c1 int, c2 int, c3 text); ** CREATE INDEX Ex2 ON Ex1(c3,c1); ** ** In the Table structure describing Ex1, nCol==3 because there are ** three columns in the table. In the Index structure describing ** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed. ** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the ** first column to be indexed (c3) has an index of 2 in Ex1.aCol[]. ** The second column to be indexed (c1) has an index of 0 in ** Ex1.aCol[], hence Ex2.aiColumn[1]==0. ** ** The Index.onError field determines whether or not the indexed columns ** must be unique and what to do if they are not. When Index.onError=OE_None, ** it means this is not a unique index. Otherwise it is a unique index ** and the value of Index.onError indicates which conflict resolution ** algorithm to employ when an attempt is made to insert a non-unique ** element. ** ** The colNotIdxed bitmask is used in combination with SrcItem.colUsed ** for a fast test to see if an index can serve as a covering index. ** colNotIdxed has a 1 bit for every column of the original table that ** is *not* available in the index. Thus the expression ** "colUsed & colNotIdxed" will be non-zero if the index is not a ** covering index. The most significant bit of of colNotIdxed will always ** be true (note-20221022-a). If a column beyond the 63rd column of the ** table is used, the "colUsed & colNotIdxed" test will always be non-zero ** and we have to assume either that the index is not covering, or use ** an alternative (slower) algorithm to determine whether or not ** the index is covering. ** ** While parsing a CREATE TABLE or CREATE INDEX statement in order to ** generate VDBE code (as opposed to parsing one read from an sqlite_schema ** table as part of parsing an existing database schema), transient instances ** of this structure may be created. In this case the Index.tnum variable is ** used to store the address of a VDBE instruction, not a database page ** number (it cannot - the database page is not allocated until the VDBE ** program is executed). See convertToWithoutRowidTable() for details. */ struct Index { char *zName; /* Name of this index */ i16 *aiColumn; /* Which columns are used by this index. 1st is 0 */ LogEst *aiRowLogEst; /* From ANALYZE: Est. rows selected by each column */ Table *pTable; /* The SQL table being indexed */ char *zColAff; /* String defining the affinity of each column */ Index *pNext; /* The next index associated with the same table */ Schema *pSchema; /* Schema containing this index */ u8 *aSortOrder; /* for each column: True==DESC, False==ASC */ const char **azColl; /* Array of collation sequence names for index */ Expr *pPartIdxWhere; /* WHERE clause for partial indices */ ExprList *aColExpr; /* Column expressions */ Pgno tnum; /* DB Page containing root of this index */ LogEst szIdxRow; /* Estimated average row size in bytes */ u16 nKeyCol; /* Number of columns forming the key */ u16 nColumn; /* Number of columns stored in the index */ u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */ unsigned idxType:2; /* 0:Normal 1:UNIQUE, 2:PRIMARY KEY, 3:IPK */ unsigned bUnordered:1; /* Use this index for == or IN queries only */ unsigned uniqNotNull:1; /* True if UNIQUE and NOT NULL for all columns */ unsigned isResized:1; /* True if resizeIndexObject() has been called */ unsigned isCovering:1; /* True if this is a covering index */ unsigned noSkipScan:1; /* Do not try to use skip-scan if true */ unsigned hasStat1:1; /* aiRowLogEst values come from sqlite_stat1 */ unsigned bLowQual:1; /* sqlite_stat1 says this is a low-quality index */ unsigned bNoQuery:1; /* Do not use this index to optimize queries */ unsigned bAscKeyBug:1; /* True if the bba7b69f9849b5bf bug applies */ unsigned bIdxRowid:1; /* One or more of the index keys is the ROWID */ unsigned bHasVCol:1; /* Index references one or more VIRTUAL columns */ unsigned bHasExpr:1; /* Index contains an expression, either a literal ** expression, or a reference to a VIRTUAL column */ #ifdef SQLITE_ENABLE_STAT4 int nSample; /* Number of elements in aSample[] */ int mxSample; /* Number of slots allocated to aSample[] */ int nSampleCol; /* Size of IndexSample.anEq[] and so on */ tRowcnt *aAvgEq; /* Average nEq values for keys not in aSample */ IndexSample *aSample; /* Samples of the left-most key */ tRowcnt *aiRowEst; /* Non-logarithmic stat1 data for this index */ tRowcnt nRowEst0; /* Non-logarithmic number of rows in the index */ #endif Bitmask colNotIdxed; /* Unindexed columns in pTab */ }; /* ** Allowed values for Index.idxType */ #define SQLITE_IDXTYPE_APPDEF 0 /* Created using CREATE INDEX */ #define SQLITE_IDXTYPE_UNIQUE 1 /* Implements a UNIQUE constraint */ #define SQLITE_IDXTYPE_PRIMARYKEY 2 /* Is the PRIMARY KEY for the table */ #define SQLITE_IDXTYPE_IPK 3 /* INTEGER PRIMARY KEY index */ /* Return true if index X is a PRIMARY KEY index */ #define IsPrimaryKeyIndex(X) ((X)->idxType==SQLITE_IDXTYPE_PRIMARYKEY) /* Return true if index X is a UNIQUE index */ #define IsUniqueIndex(X) ((X)->onError!=OE_None) /* The Index.aiColumn[] values are normally positive integer. But ** there are some negative values that have special meaning: */ #define XN_ROWID (-1) /* Indexed column is the rowid */ #define XN_EXPR (-2) /* Indexed column is an expression */ /* ** Each sample stored in the sqlite_stat4 table is represented in memory ** using a structure of this type. See documentation at the top of the ** analyze.c source file for additional information. */ struct IndexSample { void *p; /* Pointer to sampled record */ int n; /* Size of record in bytes */ tRowcnt *anEq; /* Est. number of rows where the key equals this sample */ tRowcnt *anLt; /* Est. number of rows where key is less than this sample */ tRowcnt *anDLt; /* Est. number of distinct keys less than this sample */ }; /* ** Possible values to use within the flags argument to sqlite3GetToken(). */ #define SQLITE_TOKEN_QUOTED 0x1 /* Token is a quoted identifier. */ #define SQLITE_TOKEN_KEYWORD 0x2 /* Token is a keyword. */ /* ** Each token coming out of the lexer is an instance of ** this structure. Tokens are also used as part of an expression. ** ** The memory that "z" points to is owned by other objects. Take care ** that the owner of the "z" string does not deallocate the string before ** the Token goes out of scope! Very often, the "z" points to some place ** in the middle of the Parse.zSql text. But it might also point to a ** static string. */ struct Token { const char *z; /* Text of the token. Not NULL-terminated! */ unsigned int n; /* Number of characters in this token */ }; /* ** An instance of this structure contains information needed to generate ** code for a SELECT that contains aggregate functions. ** ** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a ** pointer to this structure. The Expr.iAgg field is the index in ** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate ** code for that node. ** ** AggInfo.pGroupBy and AggInfo.aFunc.pExpr point to fields within the ** original Select structure that describes the SELECT statement. These ** fields do not need to be freed when deallocating the AggInfo structure. */ struct AggInfo { u8 directMode; /* Direct rendering mode means take data directly ** from source tables rather than from accumulators */ u8 useSortingIdx; /* In direct mode, reference the sorting index rather ** than the source table */ u16 nSortingColumn; /* Number of columns in the sorting index */ int sortingIdx; /* Cursor number of the sorting index */ int sortingIdxPTab; /* Cursor number of pseudo-table */ int iFirstReg; /* First register in range for aCol[] and aFunc[] */ ExprList *pGroupBy; /* The group by clause */ struct AggInfo_col { /* For each column used in source tables */ Table *pTab; /* Source table */ Expr *pCExpr; /* The original expression */ int iTable; /* Cursor number of the source table */ i16 iColumn; /* Column number within the source table */ i16 iSorterColumn; /* Column number in the sorting index */ } *aCol; int nColumn; /* Number of used entries in aCol[] */ int nAccumulator; /* Number of columns that show through to the output. ** Additional columns are used only as parameters to ** aggregate functions */ struct AggInfo_func { /* For each aggregate function */ Expr *pFExpr; /* Expression encoding the function */ FuncDef *pFunc; /* The aggregate function implementation */ int iDistinct; /* Ephemeral table used to enforce DISTINCT */ int iDistAddr; /* Address of OP_OpenEphemeral */ int iOBTab; /* Ephemeral table to implement ORDER BY */ u8 bOBPayload; /* iOBTab has payload columns separate from key */ u8 bOBUnique; /* Enforce uniqueness on iOBTab keys */ u8 bUseSubtype; /* Transfer subtype info through sorter */ } *aFunc; int nFunc; /* Number of entries in aFunc[] */ u32 selId; /* Select to which this AggInfo belongs */ #ifdef SQLITE_DEBUG Select *pSelect; /* SELECT statement that this AggInfo supports */ #endif }; /* ** Macros to compute aCol[] and aFunc[] register numbers. ** ** These macros should not be used prior to the call to ** assignAggregateRegisters() that computes the value of pAggInfo->iFirstReg. ** The assert()s that are part of this macro verify that constraint. */ #ifndef NDEBUG #define AggInfoColumnReg(A,I) (assert((A)->iFirstReg),(A)->iFirstReg+(I)) #define AggInfoFuncReg(A,I) \ (assert((A)->iFirstReg),(A)->iFirstReg+(A)->nColumn+(I)) #else #define AggInfoColumnReg(A,I) ((A)->iFirstReg+(I)) #define AggInfoFuncReg(A,I) \ ((A)->iFirstReg+(A)->nColumn+(I)) #endif /* ** The datatype ynVar is a signed integer, either 16-bit or 32-bit. ** Usually it is 16-bits. But if SQLITE_MAX_VARIABLE_NUMBER is greater ** than 32767 we have to make it 32-bit. 16-bit is preferred because ** it uses less memory in the Expr object, which is a big memory user ** in systems with lots of prepared statements. And few applications ** need more than about 10 or 20 variables. But some extreme users want ** to have prepared statements with over 32766 variables, and for them ** the option is available (at compile-time). */ #if SQLITE_MAX_VARIABLE_NUMBER<32767 typedef i16 ynVar; #else typedef int ynVar; #endif /* ** Each node of an expression in the parse tree is an instance ** of this structure. ** ** Expr.op is the opcode. The integer parser token codes are reused ** as opcodes here. For example, the parser defines TK_GE to be an integer ** code representing the ">=" operator. This same integer code is reused ** to represent the greater-than-or-equal-to operator in the expression ** tree. ** ** If the expression is an SQL literal (TK_INTEGER, TK_FLOAT, TK_BLOB, ** or TK_STRING), then Expr.u.zToken contains the text of the SQL literal. If ** the expression is a variable (TK_VARIABLE), then Expr.u.zToken contains the ** variable name. Finally, if the expression is an SQL function (TK_FUNCTION), ** then Expr.u.zToken contains the name of the function. ** ** Expr.pRight and Expr.pLeft are the left and right subexpressions of a ** binary operator. Either or both may be NULL. ** ** Expr.x.pList is a list of arguments if the expression is an SQL function, ** a CASE expression or an IN expression of the form "<lhs> IN (<y>, <z>...)". ** Expr.x.pSelect is used if the expression is a sub-select or an expression of ** the form "<lhs> IN (SELECT ...)". If the EP_xIsSelect bit is set in the ** Expr.flags mask, then Expr.x.pSelect is valid. Otherwise, Expr.x.pList is ** valid. ** ** An expression of the form ID or ID.ID refers to a column in a table. ** For such expressions, Expr.op is set to TK_COLUMN and Expr.iTable is ** the integer cursor number of a VDBE cursor pointing to that table and ** Expr.iColumn is the column number for the specific column. If the ** expression is used as a result in an aggregate SELECT, then the ** value is also stored in the Expr.iAgg column in the aggregate so that ** it can be accessed after all aggregates are computed. ** ** If the expression is an unbound variable marker (a question mark ** character '?' in the original SQL) then the Expr.iTable holds the index ** number for that variable. ** ** If the expression is a subquery then Expr.iColumn holds an integer ** register number containing the result of the subquery. If the ** subquery gives a constant result, then iTable is -1. If the subquery ** gives a different answer at different times during statement processing ** then iTable is the address of a subroutine that computes the subquery. ** ** If the Expr is of type OP_Column, and the table it is selecting from ** is a disk table or the "old.*" pseudo-table, then pTab points to the ** corresponding table definition. ** ** ALLOCATION NOTES: ** ** Expr objects can use a lot of memory space in database schema. To ** help reduce memory requirements, sometimes an Expr object will be ** truncated. And to reduce the number of memory allocations, sometimes ** two or more Expr objects will be stored in a single memory allocation, ** together with Expr.u.zToken strings. ** ** If the EP_Reduced and EP_TokenOnly flags are set when ** an Expr object is truncated. When EP_Reduced is set, then all ** the child Expr objects in the Expr.pLeft and Expr.pRight subtrees ** are contained within the same memory allocation. Note, however, that ** the subtrees in Expr.x.pList or Expr.x.pSelect are always separately ** allocated, regardless of whether or not EP_Reduced is set. */ struct Expr { u8 op; /* Operation performed by this node */ char affExpr; /* affinity, or RAISE type */ u8 op2; /* TK_REGISTER/TK_TRUTH: original value of Expr.op ** TK_COLUMN: the value of p5 for OP_Column ** TK_AGG_FUNCTION: nesting depth ** TK_FUNCTION: NC_SelfRef flag if needs OP_PureFunc */ #ifdef SQLITE_DEBUG u8 vvaFlags; /* Verification flags. */ #endif u32 flags; /* Various flags. EP_* See below */ union { char *zToken; /* Token value. Zero terminated and dequoted */ int iValue; /* Non-negative integer value if EP_IntValue */ } u; /* If the EP_TokenOnly flag is set in the Expr.flags mask, then no ** space is allocated for the fields below this point. An attempt to ** access them will result in a segfault or malfunction. *********************************************************************/ Expr *pLeft; /* Left subnode */ Expr *pRight; /* Right subnode */ union { ExprList *pList; /* op = IN, EXISTS, SELECT, CASE, FUNCTION, BETWEEN */ Select *pSelect; /* EP_xIsSelect and op = IN, EXISTS, SELECT */ } x; /* If the EP_Reduced flag is set in the Expr.flags mask, then no ** space is allocated for the fields below this point. An attempt to ** access them will result in a segfault or malfunction. *********************************************************************/ #if SQLITE_MAX_EXPR_DEPTH>0 int nHeight; /* Height of the tree headed by this node */ #endif int iTable; /* TK_COLUMN: cursor number of table holding column ** TK_REGISTER: register number ** TK_TRIGGER: 1 -> new, 0 -> old ** EP_Unlikely: 134217728 times likelihood ** TK_IN: ephemeral table holding RHS ** TK_SELECT_COLUMN: Number of columns on the LHS ** TK_SELECT: 1st register of result vector */ ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid. ** TK_VARIABLE: variable number (always >= 1). ** TK_SELECT_COLUMN: column of the result vector */ i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */ union { int iJoin; /* If EP_OuterON or EP_InnerON, the right table */ int iOfst; /* else: start of token from start of statement */ } w; AggInfo *pAggInfo; /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */ union { Table *pTab; /* TK_COLUMN: Table containing column. Can be NULL ** for a column of an index on an expression */ Window *pWin; /* EP_WinFunc: Window/Filter defn for a function */ struct { /* TK_IN, TK_SELECT, and TK_EXISTS */ int iAddr; /* Subroutine entry address */ int regReturn; /* Register used to hold return address */ } sub; } y; }; /* The following are the meanings of bits in the Expr.flags field. ** Value restrictions: ** ** EP_Agg == NC_HasAgg == SF_HasAgg ** EP_Win == NC_HasWin */ #define EP_OuterON 0x000001 /* Originates in ON/USING clause of outer join */ #define EP_InnerON 0x000002 /* Originates in ON/USING of an inner join */ #define EP_Distinct 0x000004 /* Aggregate function with DISTINCT keyword */ #define EP_HasFunc 0x000008 /* Contains one or more functions of any kind */ #define EP_Agg 0x000010 /* Contains one or more aggregate functions */ #define EP_FixedCol 0x000020 /* TK_Column with a known fixed value */ #define EP_VarSelect 0x000040 /* pSelect is correlated, not constant */ #define EP_DblQuoted 0x000080 /* token.z was originally in "..." */ #define EP_InfixFunc 0x000100 /* True for an infix function: LIKE, GLOB, etc */ #define EP_Collate 0x000200 /* Tree contains a TK_COLLATE operator */ #define EP_Commuted 0x000400 /* Comparison operator has been commuted */ #define EP_IntValue 0x000800 /* Integer value contained in u.iValue */ #define EP_xIsSelect 0x001000 /* x.pSelect is valid (otherwise x.pList is) */ #define EP_Skip 0x002000 /* Operator does not contribute to affinity */ #define EP_Reduced 0x004000 /* Expr struct EXPR_REDUCEDSIZE bytes only */ #define EP_Win 0x008000 /* Contains window functions */ #define EP_TokenOnly 0x010000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */ #define EP_FullSize 0x020000 /* Expr structure must remain full sized */ #define EP_IfNullRow 0x040000 /* The TK_IF_NULL_ROW opcode */ #define EP_Unlikely 0x080000 /* unlikely() or likelihood() function */ #define EP_ConstFunc 0x100000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */ #define EP_CanBeNull 0x200000 /* Can be null despite NOT NULL constraint */ #define EP_Subquery 0x400000 /* Tree contains a TK_SELECT operator */ #define EP_Leaf 0x800000 /* Expr.pLeft, .pRight, .u.pSelect all NULL */ #define EP_WinFunc 0x1000000 /* TK_FUNCTION with Expr.y.pWin set */ #define EP_Subrtn 0x2000000 /* Uses Expr.y.sub. TK_IN, _SELECT, or _EXISTS */ #define EP_Quoted 0x4000000 /* TK_ID was originally quoted */ #define EP_Static 0x8000000 /* Held in memory not obtained from malloc() */ #define EP_IsTrue 0x10000000 /* Always has boolean value of TRUE */ #define EP_IsFalse 0x20000000 /* Always has boolean value of FALSE */ #define EP_FromDDL 0x40000000 /* Originates from sqlite_schema */ #define EP_SubtArg 0x80000000 /* Is argument to SQLITE_SUBTYPE function */ /* The EP_Propagate mask is a set of properties that automatically propagate ** upwards into parent nodes. */ #define EP_Propagate (EP_Collate|EP_Subquery|EP_HasFunc) /* Macros can be used to test, set, or clear bits in the ** Expr.flags field. */ #define ExprHasProperty(E,P) (((E)->flags&(P))!=0) #define ExprHasAllProperty(E,P) (((E)->flags&(P))==(P)) #define ExprSetProperty(E,P) (E)->flags|=(P) #define ExprClearProperty(E,P) (E)->flags&=~(P) #define ExprAlwaysTrue(E) (((E)->flags&(EP_OuterON|EP_IsTrue))==EP_IsTrue) #define ExprAlwaysFalse(E) (((E)->flags&(EP_OuterON|EP_IsFalse))==EP_IsFalse) #define ExprIsFullSize(E) (((E)->flags&(EP_Reduced|EP_TokenOnly))==0) /* Macros used to ensure that the correct members of unions are accessed ** in Expr. */ #define ExprUseUToken(E) (((E)->flags&EP_IntValue)==0) #define ExprUseUValue(E) (((E)->flags&EP_IntValue)!=0) #define ExprUseWOfst(E) (((E)->flags&(EP_InnerON|EP_OuterON))==0) #define ExprUseWJoin(E) (((E)->flags&(EP_InnerON|EP_OuterON))!=0) #define ExprUseXList(E) (((E)->flags&EP_xIsSelect)==0) #define ExprUseXSelect(E) (((E)->flags&EP_xIsSelect)!=0) #define ExprUseYTab(E) (((E)->flags&(EP_WinFunc|EP_Subrtn))==0) #define ExprUseYWin(E) (((E)->flags&EP_WinFunc)!=0) #define ExprUseYSub(E) (((E)->flags&EP_Subrtn)!=0) /* Flags for use with Expr.vvaFlags */ #define EP_NoReduce 0x01 /* Cannot EXPRDUP_REDUCE this Expr */ #define EP_Immutable 0x02 /* Do not change this Expr node */ /* The ExprSetVVAProperty() macro is used for Verification, Validation, ** and Accreditation only. It works like ExprSetProperty() during VVA ** processes but is a no-op for delivery. */ #ifdef SQLITE_DEBUG # define ExprSetVVAProperty(E,P) (E)->vvaFlags|=(P) # define ExprHasVVAProperty(E,P) (((E)->vvaFlags&(P))!=0) # define ExprClearVVAProperties(E) (E)->vvaFlags = 0 #else # define ExprSetVVAProperty(E,P) # define ExprHasVVAProperty(E,P) 0 # define ExprClearVVAProperties(E) #endif /* ** Macros to determine the number of bytes required by a normal Expr ** struct, an Expr struct with the EP_Reduced flag set in Expr.flags ** and an Expr struct with the EP_TokenOnly flag set. */ #define EXPR_FULLSIZE sizeof(Expr) /* Full size */ #define EXPR_REDUCEDSIZE offsetof(Expr,iTable) /* Common features */ #define EXPR_TOKENONLYSIZE offsetof(Expr,pLeft) /* Fewer features */ /* ** Flags passed to the sqlite3ExprDup() function. See the header comment ** above sqlite3ExprDup() for details. */ #define EXPRDUP_REDUCE 0x0001 /* Used reduced-size Expr nodes */ /* ** True if the expression passed as an argument was a function with ** an OVER() clause (a window function). */ #ifdef SQLITE_OMIT_WINDOWFUNC # define IsWindowFunc(p) 0 #else # define IsWindowFunc(p) ( \ ExprHasProperty((p), EP_WinFunc) && p->y.pWin->eFrmType!=TK_FILTER \ ) #endif /* ** A list of expressions. Each expression may optionally have a ** name. An expr/name combination can be used in several ways, such ** as the list of "expr AS ID" fields following a "SELECT" or in the ** list of "ID = expr" items in an UPDATE. A list of expressions can ** also be used as the argument to a function, in which case the a.zName ** field is not used. ** ** In order to try to keep memory usage down, the Expr.a.zEName field ** is used for multiple purposes: ** ** eEName Usage ** ---------- ------------------------- ** ENAME_NAME (1) the AS of result set column ** (2) COLUMN= of an UPDATE ** ** ENAME_TAB DB.TABLE.NAME used to resolve names ** of subqueries ** ** ENAME_SPAN Text of the original result set ** expression. */ struct ExprList { int nExpr; /* Number of expressions on the list */ int nAlloc; /* Number of a[] slots allocated */ struct ExprList_item { /* For each expression in the list */ Expr *pExpr; /* The parse tree for this expression */ char *zEName; /* Token associated with this expression */ struct { u8 sortFlags; /* Mask of KEYINFO_ORDER_* flags */ unsigned eEName :2; /* Meaning of zEName */ unsigned done :1; /* Indicates when processing is finished */ unsigned reusable :1; /* Constant expression is reusable */ unsigned bSorterRef :1; /* Defer evaluation until after sorting */ unsigned bNulls :1; /* True if explicit "NULLS FIRST/LAST" */ unsigned bUsed :1; /* This column used in a SF_NestedFrom subquery */ unsigned bUsingTerm:1; /* Term from the USING clause of a NestedFrom */ unsigned bNoExpand: 1; /* Term is an auxiliary in NestedFrom and should ** not be expanded by "*" in parent queries */ } fg; union { struct { /* Used by any ExprList other than Parse.pConsExpr */ u16 iOrderByCol; /* For ORDER BY, column number in result set */ u16 iAlias; /* Index into Parse.aAlias[] for zName */ } x; int iConstExprReg; /* Register in which Expr value is cached. Used only ** by Parse.pConstExpr */ } u; } a[1]; /* One slot for each expression in the list */ }; /* ** Allowed values for Expr.a.eEName */ #define ENAME_NAME 0 /* The AS clause of a result set */ #define ENAME_SPAN 1 /* Complete text of the result set expression */ #define ENAME_TAB 2 /* "DB.TABLE.NAME" for the result set */ #define ENAME_ROWID 3 /* "DB.TABLE._rowid_" for * expansion of rowid */ /* ** An instance of this structure can hold a simple list of identifiers, ** such as the list "a,b,c" in the following statements: ** ** INSERT INTO t(a,b,c) VALUES ...; ** CREATE INDEX idx ON t(a,b,c); ** CREATE TRIGGER trig BEFORE UPDATE ON t(a,b,c) ...; ** ** The IdList.a.idx field is used when the IdList represents the list of ** column names after a table name in an INSERT statement. In the statement ** ** INSERT INTO t(a,b,c) ... ** ** If "a" is the k-th column of table "t", then IdList.a[0].idx==k. */ struct IdList { int nId; /* Number of identifiers on the list */ struct IdList_item { char *zName; /* Name of the identifier */ } a[1]; }; /* ** Allowed values for IdList.eType, which determines which value of the a.u4 ** is valid. */ #define EU4_NONE 0 /* Does not use IdList.a.u4 */ #define EU4_IDX 1 /* Uses IdList.a.u4.idx */ #define EU4_EXPR 2 /* Uses IdList.a.u4.pExpr -- NOT CURRENTLY USED */ /* ** Details of the implementation of a subquery. */ struct Subquery { Select *pSelect; /* A SELECT statement used in place of a table name */ int addrFillSub; /* Address of subroutine to initialize a subquery */ int regReturn; /* Register holding return address of addrFillSub */ int regResult; /* Registers holding results of a co-routine */ }; /* ** The SrcItem object represents a single term in the FROM clause of a query. ** The SrcList object is mostly an array of SrcItems. ** ** The jointype starts out showing the join type between the current table ** and the next table on the list. The parser builds the list this way. ** But sqlite3SrcListShiftJoinType() later shifts the jointypes so that each ** jointype expresses the join between the table and the previous table. ** ** In the colUsed field, the high-order bit (bit 63) is set if the table ** contains more than 63 columns and the 64-th or later column is used. ** ** Aggressive use of "union" helps keep the size of the object small. This ** has been shown to boost performance, in addition to saving memory. ** Access to union elements is gated by the following rules which should ** always be checked, either by an if-statement or by an assert(). ** ** Field Only access if this is true ** --------------- ----------------------------------- ** u1.zIndexedBy fg.isIndexedBy ** u1.pFuncArg fg.isTabFunc ** u1.nRow !fg.isTabFunc && !fg.isIndexedBy ** ** u2.pIBIndex fg.isIndexedBy ** u2.pCteUse fg.isCte ** ** u3.pOn !fg.isUsing ** u3.pUsing fg.isUsing ** ** u4.zDatabase !fg.fixedSchema && !fg.isSubquery ** u4.pSchema fg.fixedSchema ** u4.pSubq fg.isSubquery ** ** See also the sqlite3SrcListDelete() routine for assert() statements that ** check invariants on the fields of this object, especially the flags ** inside the fg struct. */ struct SrcItem { char *zName; /* Name of the table */ char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */ Table *pSTab; /* Table object for zName. Mnemonic: Srcitem-TABle */ struct { u8 jointype; /* Type of join between this table and the previous */ unsigned notIndexed :1; /* True if there is a NOT INDEXED clause */ unsigned isIndexedBy :1; /* True if there is an INDEXED BY clause */ unsigned isSubquery :1; /* True if this term is a subquery */ unsigned isTabFunc :1; /* True if table-valued-function syntax */ unsigned isCorrelated :1; /* True if sub-query is correlated */ unsigned isMaterialized:1; /* This is a materialized view */ unsigned viaCoroutine :1; /* Implemented as a co-routine */ unsigned isRecursive :1; /* True for recursive reference in WITH */ unsigned fromDDL :1; /* Comes from sqlite_schema */ unsigned isCte :1; /* This is a CTE */ unsigned notCte :1; /* This item may not match a CTE */ unsigned isUsing :1; /* u3.pUsing is valid */ unsigned isOn :1; /* u3.pOn was once valid and non-NULL */ unsigned isSynthUsing :1; /* u3.pUsing is synthesized from NATURAL */ unsigned isNestedFrom :1; /* pSelect is a SF_NestedFrom subquery */ unsigned rowidUsed :1; /* The ROWID of this table is referenced */ unsigned fixedSchema :1; /* Uses u4.pSchema, not u4.zDatabase */ unsigned hadSchema :1; /* Had u4.zDatabase before u4.pSchema */ } fg; int iCursor; /* The VDBE cursor number used to access this table */ Bitmask colUsed; /* Bit N set if column N used. Details above for N>62 */ union { char *zIndexedBy; /* Identifier from "INDEXED BY <zIndex>" clause */ ExprList *pFuncArg; /* Arguments to table-valued-function */ u32 nRow; /* Number of rows in a VALUES clause */ } u1; union { Index *pIBIndex; /* Index structure corresponding to u1.zIndexedBy */ CteUse *pCteUse; /* CTE Usage info when fg.isCte is true */ } u2; union { Expr *pOn; /* fg.isUsing==0 => The ON clause of a join */ IdList *pUsing; /* fg.isUsing==1 => The USING clause of a join */ } u3; union { Schema *pSchema; /* Schema to which this item is fixed */ char *zDatabase; /* Name of database holding this table */ Subquery *pSubq; /* Description of a subquery */ } u4; }; /* ** The OnOrUsing object represents either an ON clause or a USING clause. ** It can never be both at the same time, but it can be neither. */ struct OnOrUsing { Expr *pOn; /* The ON clause of a join */ IdList *pUsing; /* The USING clause of a join */ }; /* ** This object represents one or more tables that are the source of ** content for an SQL statement. For example, a single SrcList object ** is used to hold the FROM clause of a SELECT statement. SrcList also ** represents the target tables for DELETE, INSERT, and UPDATE statements. ** */ struct SrcList { int nSrc; /* Number of tables or subqueries in the FROM clause */ u32 nAlloc; /* Number of entries allocated in a[] below */ SrcItem a[1]; /* One entry for each identifier on the list */ }; /* ** Permitted values of the SrcList.a.jointype field */ #define JT_INNER 0x01 /* Any kind of inner or cross join */ #define JT_CROSS 0x02 /* Explicit use of the CROSS keyword */ #define JT_NATURAL 0x04 /* True for a "natural" join */ #define JT_LEFT 0x08 /* Left outer join */ #define JT_RIGHT 0x10 /* Right outer join */ #define JT_OUTER 0x20 /* The "OUTER" keyword is present */ #define JT_LTORJ 0x40 /* One of the LEFT operands of a RIGHT JOIN ** Mnemonic: Left Table Of Right Join */ #define JT_ERROR 0x80 /* unknown or unsupported join type */ /* ** Flags appropriate for the wctrlFlags parameter of sqlite3WhereBegin() ** and the WhereInfo.wctrlFlags member. ** ** Value constraints (enforced via assert()): ** WHERE_USE_LIMIT == SF_FixedLimit */ #define WHERE_ORDERBY_NORMAL 0x0000 /* No-op */ #define WHERE_ORDERBY_MIN 0x0001 /* ORDER BY processing for min() func */ #define WHERE_ORDERBY_MAX 0x0002 /* ORDER BY processing for max() func */ #define WHERE_ONEPASS_DESIRED 0x0004 /* Want to do one-pass UPDATE/DELETE */ #define WHERE_ONEPASS_MULTIROW 0x0008 /* ONEPASS is ok with multiple rows */ #define WHERE_DUPLICATES_OK 0x0010 /* Ok to return a row more than once */ #define WHERE_OR_SUBCLAUSE 0x0020 /* Processing a sub-WHERE as part of ** the OR optimization */ #define WHERE_GROUPBY 0x0040 /* pOrderBy is really a GROUP BY */ #define WHERE_DISTINCTBY 0x0080 /* pOrderby is really a DISTINCT clause */ #define WHERE_WANT_DISTINCT 0x0100 /* All output needs to be distinct */ #define WHERE_SORTBYGROUP 0x0200 /* Support sqlite3WhereIsSorted() */ #define WHERE_AGG_DISTINCT 0x0400 /* Query is "SELECT agg(DISTINCT ...)" */ #define WHERE_ORDERBY_LIMIT 0x0800 /* ORDERBY+LIMIT on the inner loop */ #define WHERE_RIGHT_JOIN 0x1000 /* Processing a RIGHT JOIN */ #define WHERE_KEEP_ALL_JOINS 0x2000 /* Do not do the omit-noop-join opt */ #define WHERE_USE_LIMIT 0x4000 /* Use the LIMIT in cost estimates */ /* 0x8000 not currently used */ /* Allowed return values from sqlite3WhereIsDistinct() */ #define WHERE_DISTINCT_NOOP 0 /* DISTINCT keyword not used */ #define WHERE_DISTINCT_UNIQUE 1 /* No duplicates */ #define WHERE_DISTINCT_ORDERED 2 /* All duplicates are adjacent */ #define WHERE_DISTINCT_UNORDERED 3 /* Duplicates are scattered */ /* ** A NameContext defines a context in which to resolve table and column ** names. The context consists of a list of tables (the pSrcList) field and ** a list of named expression (pEList). The named expression list may ** be NULL. The pSrc corresponds to the FROM clause of a SELECT or ** to the table being operated on by INSERT, UPDATE, or DELETE. The ** pEList corresponds to the result set of a SELECT and is NULL for ** other statements. ** ** NameContexts can be nested. When resolving names, the inner-most ** context is searched first. If no match is found, the next outer ** context is checked. If there is still no match, the next context ** is checked. This process continues until either a match is found ** or all contexts are check. When a match is found, the nRef member of ** the context containing the match is incremented. ** ** Each subquery gets a new NameContext. The pNext field points to the ** NameContext in the parent query. Thus the process of scanning the ** NameContext list corresponds to searching through successively outer ** subqueries looking for a match. */ struct NameContext { Parse *pParse; /* The parser */ SrcList *pSrcList; /* One or more tables used to resolve names */ union { ExprList *pEList; /* Optional list of result-set columns */ AggInfo *pAggInfo; /* Information about aggregates at this level */ Upsert *pUpsert; /* ON CONFLICT clause information from an upsert */ int iBaseReg; /* For TK_REGISTER when parsing RETURNING */ } uNC; NameContext *pNext; /* Next outer name context. NULL for outermost */ int nRef; /* Number of names resolved by this context */ int nNcErr; /* Number of errors encountered while resolving names */ int ncFlags; /* Zero or more NC_* flags defined below */ u32 nNestedSelect; /* Number of nested selects using this NC */ Select *pWinSelect; /* SELECT statement for any window functions */ }; /* ** Allowed values for the NameContext, ncFlags field. ** ** Value constraints (all checked via assert()): ** NC_HasAgg == SF_HasAgg == EP_Agg ** NC_MinMaxAgg == SF_MinMaxAgg == SQLITE_FUNC_MINMAX ** NC_OrderAgg == SF_OrderByReqd == SQLITE_FUNC_ANYORDER ** NC_HasWin == EP_Win ** */ #define NC_AllowAgg 0x000001 /* Aggregate functions are allowed here */ #define NC_PartIdx 0x000002 /* True if resolving a partial index WHERE */ #define NC_IsCheck 0x000004 /* True if resolving a CHECK constraint */ #define NC_GenCol 0x000008 /* True for a GENERATED ALWAYS AS clause */ #define NC_HasAgg 0x000010 /* One or more aggregate functions seen */ #define NC_IdxExpr 0x000020 /* True if resolving columns of CREATE INDEX */ #define NC_SelfRef 0x00002e /* Combo: PartIdx, isCheck, GenCol, and IdxExpr */ #define NC_Subquery 0x000040 /* A subquery has been seen */ #define NC_UEList 0x000080 /* True if uNC.pEList is used */ #define NC_UAggInfo 0x000100 /* True if uNC.pAggInfo is used */ #define NC_UUpsert 0x000200 /* True if uNC.pUpsert is used */ #define NC_UBaseReg 0x000400 /* True if uNC.iBaseReg is used */ #define NC_MinMaxAgg 0x001000 /* min/max aggregates seen. See note above */ /* 0x002000 // available for reuse */ #define NC_AllowWin 0x004000 /* Window functions are allowed here */ #define NC_HasWin 0x008000 /* One or more window functions seen */ #define NC_IsDDL 0x010000 /* Resolving names in a CREATE statement */ #define NC_InAggFunc 0x020000 /* True if analyzing arguments to an agg func */ #define NC_FromDDL 0x040000 /* SQL text comes from sqlite_schema */ #define NC_NoSelect 0x080000 /* Do not descend into sub-selects */ #define NC_Where 0x100000 /* Processing WHERE clause of a SELECT */ #define NC_OrderAgg 0x8000000 /* Has an aggregate other than count/min/max */ /* ** An instance of the following object describes a single ON CONFLICT ** clause in an upsert. ** ** The pUpsertTarget field is only set if the ON CONFLICT clause includes ** conflict-target clause. (In "ON CONFLICT(a,b)" the "(a,b)" is the ** conflict-target clause.) The pUpsertTargetWhere is the optional ** WHERE clause used to identify partial unique indexes. ** ** pUpsertSet is the list of column=expr terms of the UPDATE statement. ** The pUpsertSet field is NULL for a ON CONFLICT DO NOTHING. The ** pUpsertWhere is the WHERE clause for the UPDATE and is NULL if the ** WHERE clause is omitted. */ struct Upsert { ExprList *pUpsertTarget; /* Optional description of conflict target */ Expr *pUpsertTargetWhere; /* WHERE clause for partial index targets */ ExprList *pUpsertSet; /* The SET clause from an ON CONFLICT UPDATE */ Expr *pUpsertWhere; /* WHERE clause for the ON CONFLICT UPDATE */ Upsert *pNextUpsert; /* Next ON CONFLICT clause in the list */ u8 isDoUpdate; /* True for DO UPDATE. False for DO NOTHING */ u8 isDup; /* True if 2nd or later with same pUpsertIdx */ /* Above this point is the parse tree for the ON CONFLICT clauses. ** The next group of fields stores intermediate data. */ void *pToFree; /* Free memory when deleting the Upsert object */ /* All fields above are owned by the Upsert object and must be freed ** when the Upsert is destroyed. The fields below are used to transfer ** information from the INSERT processing down into the UPDATE processing ** while generating code. The fields below are owned by the INSERT ** statement and will be freed by INSERT processing. */ Index *pUpsertIdx; /* UNIQUE constraint specified by pUpsertTarget */ SrcList *pUpsertSrc; /* Table to be updated */ int regData; /* First register holding array of VALUES */ int iDataCur; /* Index of the data cursor */ int iIdxCur; /* Index of the first index cursor */ }; /* ** An instance of the following structure contains all information ** needed to generate code for a single SELECT statement. ** ** See the header comment on the computeLimitRegisters() routine for a ** detailed description of the meaning of the iLimit and iOffset fields. ** ** addrOpenEphm[] entries contain the address of OP_OpenEphemeral opcodes. ** These addresses must be stored so that we can go back and fill in ** the P4_KEYINFO and P2 parameters later. Neither the KeyInfo nor ** the number of columns in P2 can be computed at the same time ** as the OP_OpenEphm instruction is coded because not ** enough information about the compound query is known at that point. ** The KeyInfo for addrOpenTran[0] and [1] contains collating sequences ** for the result set. The KeyInfo for addrOpenEphm[2] contains collating ** sequences for the ORDER BY clause. */ struct Select { u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */ LogEst nSelectRow; /* Estimated number of result rows */ u32 selFlags; /* Various SF_* values */ int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */ u32 selId; /* Unique identifier number for this SELECT */ int addrOpenEphm[2]; /* OP_OpenEphem opcodes related to this select */ ExprList *pEList; /* The fields of the result */ SrcList *pSrc; /* The FROM clause */ Expr *pWhere; /* The WHERE clause */ ExprList *pGroupBy; /* The GROUP BY clause */ Expr *pHaving; /* The HAVING clause */ ExprList *pOrderBy; /* The ORDER BY clause */ Select *pPrior; /* Prior select in a compound select statement */ Select *pNext; /* Next select to the left in a compound */ Expr *pLimit; /* LIMIT expression. NULL means not used. */ With *pWith; /* WITH clause attached to this select. Or NULL. */ #ifndef SQLITE_OMIT_WINDOWFUNC Window *pWin; /* List of window functions */ Window *pWinDefn; /* List of named window definitions */ #endif }; /* ** Allowed values for Select.selFlags. The "SF" prefix stands for ** "Select Flag". ** ** Value constraints (all checked via assert()) ** SF_HasAgg == NC_HasAgg ** SF_MinMaxAgg == NC_MinMaxAgg == SQLITE_FUNC_MINMAX ** SF_OrderByReqd == NC_OrderAgg == SQLITE_FUNC_ANYORDER ** SF_FixedLimit == WHERE_USE_LIMIT */ #define SF_Distinct 0x0000001 /* Output should be DISTINCT */ #define SF_All 0x0000002 /* Includes the ALL keyword */ #define SF_Resolved 0x0000004 /* Identifiers have been resolved */ #define SF_Aggregate 0x0000008 /* Contains agg functions or a GROUP BY */ #define SF_HasAgg 0x0000010 /* Contains aggregate functions */ #define SF_UsesEphemeral 0x0000020 /* Uses the OpenEphemeral opcode */ #define SF_Expanded 0x0000040 /* sqlite3SelectExpand() called on this */ #define SF_HasTypeInfo 0x0000080 /* FROM subqueries have Table metadata */ #define SF_Compound 0x0000100 /* Part of a compound query */ #define SF_Values 0x0000200 /* Synthesized from VALUES clause */ #define SF_MultiValue 0x0000400 /* Single VALUES term with multiple rows */ #define SF_NestedFrom 0x0000800 /* Part of a parenthesized FROM clause */ #define SF_MinMaxAgg 0x0001000 /* Aggregate containing min() or max() */ #define SF_Recursive 0x0002000 /* The recursive part of a recursive CTE */ #define SF_FixedLimit 0x0004000 /* nSelectRow set by a constant LIMIT */ #define SF_MaybeConvert 0x0008000 /* Need convertCompoundSelectToSubquery() */ #define SF_Converted 0x0010000 /* By convertCompoundSelectToSubquery() */ #define SF_IncludeHidden 0x0020000 /* Include hidden columns in output */ #define SF_ComplexResult 0x0040000 /* Result contains subquery or function */ #define SF_WhereBegin 0x0080000 /* Really a WhereBegin() call. Debug Only */ #define SF_WinRewrite 0x0100000 /* Window function rewrite accomplished */ #define SF_View 0x0200000 /* SELECT statement is a view */ #define SF_NoopOrderBy 0x0400000 /* ORDER BY is ignored for this query */ #define SF_UFSrcCheck 0x0800000 /* Check pSrc as required by UPDATE...FROM */ #define SF_PushDown 0x1000000 /* Modified by WHERE-clause push-down opt */ #define SF_MultiPart 0x2000000 /* Has multiple incompatible PARTITIONs */ #define SF_CopyCte 0x4000000 /* SELECT statement is a copy of a CTE */ #define SF_OrderByReqd 0x8000000 /* The ORDER BY clause may not be omitted */ #define SF_UpdateFrom 0x10000000 /* Query originates with UPDATE FROM */ #define SF_Correlated 0x20000000 /* True if references the outer context */ /* True if SrcItem X is a subquery that has SF_NestedFrom */ #define IsNestedFrom(X) \ ((X)->fg.isSubquery && \ ((X)->u4.pSubq->pSelect->selFlags&SF_NestedFrom)!=0) /* ** The results of a SELECT can be distributed in several ways, as defined ** by one of the following macros. The "SRT" prefix means "SELECT Result ** Type". ** ** SRT_Union Store results as a key in a temporary index ** identified by pDest->iSDParm. ** ** SRT_Except Remove results from the temporary index pDest->iSDParm. ** ** SRT_Exists Store a 1 in memory cell pDest->iSDParm if the result ** set is not empty. ** ** SRT_Discard Throw the results away. This is used by SELECT ** statements within triggers whose only purpose is ** the side-effects of functions. ** ** SRT_Output Generate a row of output (using the OP_ResultRow ** opcode) for each row in the result set. ** ** SRT_Mem Only valid if the result is a single column. ** Store the first column of the first result row ** in register pDest->iSDParm then abandon the rest ** of the query. This destination implies "LIMIT 1". ** ** SRT_Set The result must be a single column. Store each ** row of result as the key in table pDest->iSDParm. ** Apply the affinity pDest->affSdst before storing ** results. if pDest->iSDParm2 is positive, then it is ** a register holding a Bloom filter for the IN operator ** that should be populated in addition to the ** pDest->iSDParm table. This SRT is used to ** implement "IN (SELECT ...)". ** ** SRT_EphemTab Create an temporary table pDest->iSDParm and store ** the result there. The cursor is left open after ** returning. This is like SRT_Table except that ** this destination uses OP_OpenEphemeral to create ** the table first. ** ** SRT_Coroutine Generate a co-routine that returns a new row of ** results each time it is invoked. The entry point ** of the co-routine is stored in register pDest->iSDParm ** and the result row is stored in pDest->nDest registers ** starting with pDest->iSdst. ** ** SRT_Table Store results in temporary table pDest->iSDParm. ** SRT_Fifo This is like SRT_EphemTab except that the table ** is assumed to already be open. SRT_Fifo has ** the additional property of being able to ignore ** the ORDER BY clause. ** ** SRT_DistFifo Store results in a temporary table pDest->iSDParm. ** But also use temporary table pDest->iSDParm+1 as ** a record of all prior results and ignore any duplicate ** rows. Name means: "Distinct Fifo". ** ** SRT_Queue Store results in priority queue pDest->iSDParm (really ** an index). Append a sequence number so that all entries ** are distinct. ** ** SRT_DistQueue Store results in priority queue pDest->iSDParm only if ** the same record has never been stored before. The ** index at pDest->iSDParm+1 hold all prior stores. ** ** SRT_Upfrom Store results in the temporary table already opened by ** pDest->iSDParm. If (pDest->iSDParm<0), then the temp ** table is an intkey table - in this case the first ** column returned by the SELECT is used as the integer ** key. If (pDest->iSDParm>0), then the table is an index ** table. (pDest->iSDParm) is the number of key columns in ** each index record in this case. */ #define SRT_Union 1 /* Store result as keys in an index */ #define SRT_Except 2 /* Remove result from a UNION index */ #define SRT_Exists 3 /* Store 1 if the result is not empty */ #define SRT_Discard 4 /* Do not save the results anywhere */ #define SRT_DistFifo 5 /* Like SRT_Fifo, but unique results only */ #define SRT_DistQueue 6 /* Like SRT_Queue, but unique results only */ /* The DISTINCT clause is ignored for all of the above. Not that ** IgnorableDistinct() implies IgnorableOrderby() */ #define IgnorableDistinct(X) ((X->eDest)<=SRT_DistQueue) #define SRT_Queue 7 /* Store result in an queue */ #define SRT_Fifo 8 /* Store result as data with an automatic rowid */ /* The ORDER BY clause is ignored for all of the above */ #define IgnorableOrderby(X) ((X->eDest)<=SRT_Fifo) #define SRT_Output 9 /* Output each row of result */ #define SRT_Mem 10 /* Store result in a memory cell */ #define SRT_Set 11 /* Store results as keys in an index */ #define SRT_EphemTab 12 /* Create transient tab and store like SRT_Table */ #define SRT_Coroutine 13 /* Generate a single row of result */ #define SRT_Table 14 /* Store result as data with an automatic rowid */ #define SRT_Upfrom 15 /* Store result as data with rowid */ /* ** An instance of this object describes where to put of the results of ** a SELECT statement. */ struct SelectDest { u8 eDest; /* How to dispose of the results. One of SRT_* above. */ int iSDParm; /* A parameter used by the eDest disposal method */ int iSDParm2; /* A second parameter for the eDest disposal method */ int iSdst; /* Base register where results are written */ int nSdst; /* Number of registers allocated */ char *zAffSdst; /* Affinity used for SRT_Set */ ExprList *pOrderBy; /* Key columns for SRT_Queue and SRT_DistQueue */ }; /* ** During code generation of statements that do inserts into AUTOINCREMENT ** tables, the following information is attached to the Table.u.autoInc.p ** pointer of each autoincrement table to record some side information that ** the code generator needs. We have to keep per-table autoincrement ** information in case inserts are done within triggers. Triggers do not ** normally coordinate their activities, but we do need to coordinate the ** loading and saving of autoincrement information. */ struct AutoincInfo { AutoincInfo *pNext; /* Next info block in a list of them all */ Table *pTab; /* Table this info block refers to */ int iDb; /* Index in sqlite3.aDb[] of database holding pTab */ int regCtr; /* Memory register holding the rowid counter */ }; /* ** At least one instance of the following structure is created for each ** trigger that may be fired while parsing an INSERT, UPDATE or DELETE ** statement. All such objects are stored in the linked list headed at ** Parse.pTriggerPrg and deleted once statement compilation has been ** completed. ** ** A Vdbe sub-program that implements the body and WHEN clause of trigger ** TriggerPrg.pTrigger, assuming a default ON CONFLICT clause of ** TriggerPrg.orconf, is stored in the TriggerPrg.pProgram variable. ** The Parse.pTriggerPrg list never contains two entries with the same ** values for both pTrigger and orconf. ** ** The TriggerPrg.aColmask[0] variable is set to a mask of old.* columns ** accessed (or set to 0 for triggers fired as a result of INSERT ** statements). Similarly, the TriggerPrg.aColmask[1] variable is set to ** a mask of new.* columns used by the program. */ struct TriggerPrg { Trigger *pTrigger; /* Trigger this program was coded from */ TriggerPrg *pNext; /* Next entry in Parse.pTriggerPrg list */ SubProgram *pProgram; /* Program implementing pTrigger/orconf */ int orconf; /* Default ON CONFLICT policy */ u32 aColmask[2]; /* Masks of old.*, new.* columns accessed */ }; /* ** The yDbMask datatype for the bitmask of all attached databases. */ #if SQLITE_MAX_ATTACHED>30 typedef unsigned char yDbMask[(SQLITE_MAX_ATTACHED+9)/8]; # define DbMaskTest(M,I) (((M)[(I)/8]&(1<<((I)&7)))!=0) # define DbMaskZero(M) memset((M),0,sizeof(M)) # define DbMaskSet(M,I) (M)[(I)/8]|=(1<<((I)&7)) # define DbMaskAllZero(M) sqlite3DbMaskAllZero(M) # define DbMaskNonZero(M) (sqlite3DbMaskAllZero(M)==0) #else typedef unsigned int yDbMask; # define DbMaskTest(M,I) (((M)&(((yDbMask)1)<<(I)))!=0) # define DbMaskZero(M) ((M)=0) # define DbMaskSet(M,I) ((M)|=(((yDbMask)1)<<(I))) # define DbMaskAllZero(M) ((M)==0) # define DbMaskNonZero(M) ((M)!=0) #endif /* ** For each index X that has as one of its arguments either an expression ** or the name of a virtual generated column, and if X is in scope such that ** the value of the expression can simply be read from the index, then ** there is an instance of this object on the Parse.pIdxExpr list. ** ** During code generation, while generating code to evaluate expressions, ** this list is consulted and if a matching expression is found, the value ** is read from the index rather than being recomputed. */ struct IndexedExpr { Expr *pExpr; /* The expression contained in the index */ int iDataCur; /* The data cursor associated with the index */ int iIdxCur; /* The index cursor */ int iIdxCol; /* The index column that contains value of pExpr */ u8 bMaybeNullRow; /* True if we need an OP_IfNullRow check */ u8 aff; /* Affinity of the pExpr expression */ IndexedExpr *pIENext; /* Next in a list of all indexed expressions */ #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS const char *zIdxName; /* Name of index, used only for bytecode comments */ #endif }; /* ** An instance of the ParseCleanup object specifies an operation that ** should be performed after parsing to deallocation resources obtained ** during the parse and which are no longer needed. */ struct ParseCleanup { ParseCleanup *pNext; /* Next cleanup task */ void *pPtr; /* Pointer to object to deallocate */ void (*xCleanup)(sqlite3*,void*); /* Deallocation routine */ }; /* ** An SQL parser context. A copy of this structure is passed through ** the parser and down into all the parser action routine in order to ** carry around information that is global to the entire parse. ** ** The structure is divided into two parts. When the parser and code ** generate call themselves recursively, the first part of the structure ** is constant but the second part is reset at the beginning and end of ** each recursion. ** ** The nTableLock and aTableLock variables are only used if the shared-cache ** feature is enabled (if sqlite3Tsd()->useSharedData is true). They are ** used to store the set of table-locks required by the statement being ** compiled. Function sqlite3TableLock() is used to add entries to the ** list. */ struct Parse { sqlite3 *db; /* The main database structure */ char *zErrMsg; /* An error message */ Vdbe *pVdbe; /* An engine for executing database bytecode */ int rc; /* Return code from execution */ u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */ u8 checkSchema; /* Causes schema cookie check after an error */ u8 nested; /* Number of nested calls to the parser/code generator */ u8 nTempReg; /* Number of temporary registers in aTempReg[] */ u8 isMultiWrite; /* True if statement may modify/insert multiple rows */ u8 mayAbort; /* True if statement may throw an ABORT exception */ u8 hasCompound; /* Need to invoke convertCompoundSelectToSubquery() */ u8 okConstFactor; /* OK to factor out constants */ u8 disableLookaside; /* Number of times lookaside has been disabled */ u8 prepFlags; /* SQLITE_PREPARE_* flags */ u8 withinRJSubrtn; /* Nesting level for RIGHT JOIN body subroutines */ u8 bHasWith; /* True if statement contains WITH */ u8 mSubrtnSig; /* mini Bloom filter on available SubrtnSig.selId */ #if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) u8 earlyCleanup; /* OOM inside sqlite3ParserAddCleanup() */ #endif #ifdef SQLITE_DEBUG u8 ifNotExists; /* Might be true if IF NOT EXISTS. Assert()s only */ #endif int nRangeReg; /* Size of the temporary register block */ int iRangeReg; /* First register in temporary register block */ int nErr; /* Number of errors seen */ int nTab; /* Number of previously allocated VDBE cursors */ int nMem; /* Number of memory cells used so far */ int szOpAlloc; /* Bytes of memory space allocated for Vdbe.aOp[] */ int iSelfTab; /* Table associated with an index on expr, or negative ** of the base register during check-constraint eval */ int nLabel; /* The *negative* of the number of labels used */ int nLabelAlloc; /* Number of slots in aLabel */ int *aLabel; /* Space to hold the labels */ ExprList *pConstExpr;/* Constant expressions */ IndexedExpr *pIdxEpr;/* List of expressions used by active indexes */ IndexedExpr *pIdxPartExpr; /* Exprs constrained by index WHERE clauses */ Token constraintName;/* Name of the constraint currently being parsed */ yDbMask writeMask; /* Start a write transaction on these databases */ yDbMask cookieMask; /* Bitmask of schema verified databases */ int regRowid; /* Register holding rowid of CREATE TABLE entry */ int regRoot; /* Register holding root page number for new objects */ int nMaxArg; /* Max args passed to user function by sub-program */ int nSelect; /* Number of SELECT stmts. Counter for Select.selId */ #ifndef SQLITE_OMIT_PROGRESS_CALLBACK u32 nProgressSteps; /* xProgress steps taken during sqlite3_prepare() */ #endif #ifndef SQLITE_OMIT_SHARED_CACHE int nTableLock; /* Number of locks in aTableLock */ TableLock *aTableLock; /* Required table locks for shared-cache mode */ #endif AutoincInfo *pAinc; /* Information about AUTOINCREMENT counters */ Parse *pToplevel; /* Parse structure for main program (or NULL) */ Table *pTriggerTab; /* Table triggers are being coded for */ TriggerPrg *pTriggerPrg; /* Linked list of coded triggers */ ParseCleanup *pCleanup; /* List of cleanup operations to run after parse */ union { int addrCrTab; /* Address of OP_CreateBtree on CREATE TABLE */ Returning *pReturning; /* The RETURNING clause */ } u1; u32 oldmask; /* Mask of old.* columns referenced */ u32 newmask; /* Mask of new.* columns referenced */ LogEst nQueryLoop; /* Est number of iterations of a query (10*log2(N)) */ u8 eTriggerOp; /* TK_UPDATE, TK_INSERT or TK_DELETE */ u8 bReturning; /* Coding a RETURNING trigger */ u8 eOrconf; /* Default ON CONFLICT policy for trigger steps */ u8 disableTriggers; /* True to disable triggers */ /************************************************************************** ** Fields above must be initialized to zero. The fields that follow, ** down to the beginning of the recursive section, do not need to be ** initialized as they will be set before being used. The boundary is ** determined by offsetof(Parse,aTempReg). **************************************************************************/ int aTempReg[8]; /* Holding area for temporary registers */ Parse *pOuterParse; /* Outer Parse object when nested */ Token sNameToken; /* Token with unqualified schema object name */ /************************************************************************ ** Above is constant between recursions. Below is reset before and after ** each recursion. The boundary between these two regions is determined ** using offsetof(Parse,sLastToken) so the sLastToken field must be the ** first field in the recursive region. ************************************************************************/ Token sLastToken; /* The last token parsed */ ynVar nVar; /* Number of '?' variables seen in the SQL so far */ u8 iPkSortOrder; /* ASC or DESC for INTEGER PRIMARY KEY */ u8 explain; /* True if the EXPLAIN flag is found on the query */ u8 eParseMode; /* PARSE_MODE_XXX constant */ #ifndef SQLITE_OMIT_VIRTUALTABLE int nVtabLock; /* Number of virtual tables to lock */ #endif int nHeight; /* Expression tree height of current sub-select */ int addrExplain; /* Address of current OP_Explain opcode */ VList *pVList; /* Mapping between variable names and numbers */ Vdbe *pReprepare; /* VM being reprepared (sqlite3Reprepare()) */ const char *zTail; /* All SQL text past the last semicolon parsed */ Table *pNewTable; /* A table being constructed by CREATE TABLE */ Index *pNewIndex; /* An index being constructed by CREATE INDEX. ** Also used to hold redundant UNIQUE constraints ** during a RENAME COLUMN */ Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */ const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */ #ifndef SQLITE_OMIT_VIRTUALTABLE Token sArg; /* Complete text of a module argument */ Table **apVtabLock; /* Pointer to virtual tables needing locking */ #endif With *pWith; /* Current WITH clause, or NULL */ #ifndef SQLITE_OMIT_ALTERTABLE RenameToken *pRename; /* Tokens subject to renaming by ALTER TABLE */ #endif }; /* Allowed values for Parse.eParseMode */ #define PARSE_MODE_NORMAL 0 #define PARSE_MODE_DECLARE_VTAB 1 #define PARSE_MODE_RENAME 2 #define PARSE_MODE_UNMAP 3 /* ** Sizes and pointers of various parts of the Parse object. */ #define PARSE_HDR(X) (((char*)(X))+offsetof(Parse,zErrMsg)) #define PARSE_HDR_SZ (offsetof(Parse,aTempReg)-offsetof(Parse,zErrMsg)) /* Recursive part w/o aColCache*/ #define PARSE_RECURSE_SZ offsetof(Parse,sLastToken) /* Recursive part */ #define PARSE_TAIL_SZ (sizeof(Parse)-PARSE_RECURSE_SZ) /* Non-recursive part */ #define PARSE_TAIL(X) (((char*)(X))+PARSE_RECURSE_SZ) /* Pointer to tail */ /* ** Return true if currently inside an sqlite3_declare_vtab() call. */ #ifdef SQLITE_OMIT_VIRTUALTABLE #define IN_DECLARE_VTAB 0 #else #define IN_DECLARE_VTAB (pParse->eParseMode==PARSE_MODE_DECLARE_VTAB) #endif #if defined(SQLITE_OMIT_ALTERTABLE) #define IN_RENAME_OBJECT 0 #else #define IN_RENAME_OBJECT (pParse->eParseMode>=PARSE_MODE_RENAME) #endif #if defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_OMIT_ALTERTABLE) #define IN_SPECIAL_PARSE 0 #else #define IN_SPECIAL_PARSE (pParse->eParseMode!=PARSE_MODE_NORMAL) #endif /* ** An instance of the following structure can be declared on a stack and used ** to save the Parse.zAuthContext value so that it can be restored later. */ struct AuthContext { const char *zAuthContext; /* Put saved Parse.zAuthContext here */ Parse *pParse; /* The Parse structure */ }; /* ** Bitfield flags for P5 value in various opcodes. ** ** Value constraints (enforced via assert()): ** OPFLAG_LENGTHARG == SQLITE_FUNC_LENGTH ** OPFLAG_TYPEOFARG == SQLITE_FUNC_TYPEOF ** OPFLAG_BULKCSR == BTREE_BULKLOAD ** OPFLAG_SEEKEQ == BTREE_SEEK_EQ ** OPFLAG_FORDELETE == BTREE_FORDELETE ** OPFLAG_SAVEPOSITION == BTREE_SAVEPOSITION ** OPFLAG_AUXDELETE == BTREE_AUXDELETE */ #define OPFLAG_NCHANGE 0x01 /* OP_Insert: Set to update db->nChange */ /* Also used in P2 (not P5) of OP_Delete */ #define OPFLAG_NOCHNG 0x01 /* OP_VColumn nochange for UPDATE */ #define OPFLAG_EPHEM 0x01 /* OP_Column: Ephemeral output is ok */ #define OPFLAG_LASTROWID 0x20 /* Set to update db->lastRowid */ #define OPFLAG_ISUPDATE 0x04 /* This OP_Insert is an sql UPDATE */ #define OPFLAG_APPEND 0x08 /* This is likely to be an append */ #define OPFLAG_USESEEKRESULT 0x10 /* Try to avoid a seek in BtreeInsert() */ #define OPFLAG_ISNOOP 0x40 /* OP_Delete does pre-update-hook only */ #define OPFLAG_LENGTHARG 0x40 /* OP_Column only used for length() */ #define OPFLAG_TYPEOFARG 0x80 /* OP_Column only used for typeof() */ #define OPFLAG_BYTELENARG 0xc0 /* OP_Column only for octet_length() */ #define OPFLAG_BULKCSR 0x01 /* OP_Open** used to open bulk cursor */ #define OPFLAG_SEEKEQ 0x02 /* OP_Open** cursor uses EQ seek only */ #define OPFLAG_FORDELETE 0x08 /* OP_Open should use BTREE_FORDELETE */ #define OPFLAG_P2ISREG 0x10 /* P2 to OP_Open** is a register number */ #define OPFLAG_PERMUTE 0x01 /* OP_Compare: use the permutation */ #define OPFLAG_SAVEPOSITION 0x02 /* OP_Delete/Insert: save cursor pos */ #define OPFLAG_AUXDELETE 0x04 /* OP_Delete: index in a DELETE op */ #define OPFLAG_NOCHNG_MAGIC 0x6d /* OP_MakeRecord: serialtype 10 is ok */ #define OPFLAG_PREFORMAT 0x80 /* OP_Insert uses preformatted cell */ /* ** Each trigger present in the database schema is stored as an instance of ** struct Trigger. ** ** Pointers to instances of struct Trigger are stored in two ways. ** 1. In the "trigHash" hash table (part of the sqlite3* that represents the ** database). This allows Trigger structures to be retrieved by name. ** 2. All triggers associated with a single table form a linked list, using the ** pNext member of struct Trigger. A pointer to the first element of the ** linked list is stored as the "pTrigger" member of the associated ** struct Table. ** ** The "step_list" member points to the first element of a linked list ** containing the SQL statements specified as the trigger program. */ struct Trigger { char *zName; /* The name of the trigger */ char *table; /* The table or view to which the trigger applies */ u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */ u8 tr_tm; /* One of TRIGGER_BEFORE, TRIGGER_AFTER */ u8 bReturning; /* This trigger implements a RETURNING clause */ Expr *pWhen; /* The WHEN clause of the expression (may be NULL) */ IdList *pColumns; /* If this is an UPDATE OF <column-list> trigger, the <column-list> is stored here */ Schema *pSchema; /* Schema containing the trigger */ Schema *pTabSchema; /* Schema containing the table */ TriggerStep *step_list; /* Link list of trigger program steps */ Trigger *pNext; /* Next trigger associated with the table */ }; /* ** A trigger is either a BEFORE or an AFTER trigger. The following constants ** determine which. ** ** If there are multiple triggers, you might of some BEFORE and some AFTER. ** In that cases, the constants below can be ORed together. */ #define TRIGGER_BEFORE 1 #define TRIGGER_AFTER 2 /* ** An instance of struct TriggerStep is used to store a single SQL statement ** that is a part of a trigger-program. ** ** Instances of struct TriggerStep are stored in a singly linked list (linked ** using the "pNext" member) referenced by the "step_list" member of the ** associated struct Trigger instance. The first element of the linked list is ** the first step of the trigger-program. ** ** The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or ** "SELECT" statement. The meanings of the other members is determined by the ** value of "op" as follows: ** ** (op == TK_INSERT) ** orconf -> stores the ON CONFLICT algorithm ** pSelect -> The content to be inserted - either a SELECT statement or ** a VALUES clause. ** zTarget -> Dequoted name of the table to insert into. ** pIdList -> If this is an INSERT INTO ... (<column-names>) VALUES ... ** statement, then this stores the column-names to be ** inserted into. ** pUpsert -> The ON CONFLICT clauses for an Upsert ** ** (op == TK_DELETE) ** zTarget -> Dequoted name of the table to delete from. ** pWhere -> The WHERE clause of the DELETE statement if one is specified. ** Otherwise NULL. ** ** (op == TK_UPDATE) ** zTarget -> Dequoted name of the table to update. ** pWhere -> The WHERE clause of the UPDATE statement if one is specified. ** Otherwise NULL. ** pExprList -> A list of the columns to update and the expressions to update ** them to. See sqlite3Update() documentation of "pChanges" ** argument. ** ** (op == TK_SELECT) ** pSelect -> The SELECT statement ** ** (op == TK_RETURNING) ** pExprList -> The list of expressions that follow the RETURNING keyword. ** */ struct TriggerStep { u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT, ** or TK_RETURNING */ u8 orconf; /* OE_Rollback etc. */ Trigger *pTrig; /* The trigger that this step is a part of */ Select *pSelect; /* SELECT statement or RHS of INSERT INTO SELECT ... */ char *zTarget; /* Target table for DELETE, UPDATE, INSERT */ SrcList *pFrom; /* FROM clause for UPDATE statement (if any) */ Expr *pWhere; /* The WHERE clause for DELETE or UPDATE steps */ ExprList *pExprList; /* SET clause for UPDATE, or RETURNING clause */ IdList *pIdList; /* Column names for INSERT */ Upsert *pUpsert; /* Upsert clauses on an INSERT */ char *zSpan; /* Original SQL text of this command */ TriggerStep *pNext; /* Next in the link-list */ TriggerStep *pLast; /* Last element in link-list. Valid for 1st elem only */ }; /* ** Information about a RETURNING clause */ struct Returning { Parse *pParse; /* The parse that includes the RETURNING clause */ ExprList *pReturnEL; /* List of expressions to return */ Trigger retTrig; /* The transient trigger that implements RETURNING */ TriggerStep retTStep; /* The trigger step */ int iRetCur; /* Transient table holding RETURNING results */ int nRetCol; /* Number of in pReturnEL after expansion */ int iRetReg; /* Register array for holding a row of RETURNING */ char zName[40]; /* Name of trigger: "sqlite_returning_%p" */ }; /* ** An object used to accumulate the text of a string where we ** do not necessarily know how big the string will be in the end. */ struct sqlite3_str { sqlite3 *db; /* Optional database for lookaside. Can be NULL */ char *zText; /* The string collected so far */ u32 nAlloc; /* Amount of space allocated in zText */ u32 mxAlloc; /* Maximum allowed allocation. 0 for no malloc usage */ u32 nChar; /* Length of the string so far */ u8 accError; /* SQLITE_NOMEM or SQLITE_TOOBIG */ u8 printfFlags; /* SQLITE_PRINTF flags below */ }; #define SQLITE_PRINTF_INTERNAL 0x01 /* Internal-use-only converters allowed */ #define SQLITE_PRINTF_SQLFUNC 0x02 /* SQL function arguments to VXPrintf */ #define SQLITE_PRINTF_MALLOCED 0x04 /* True if zText is allocated space */ #define isMalloced(X) (((X)->printfFlags & SQLITE_PRINTF_MALLOCED)!=0) /* ** The following object is the header for an "RCStr" or "reference-counted ** string". An RCStr is passed around and used like any other char* ** that has been dynamically allocated. The important interface ** differences: ** ** 1. RCStr strings are reference counted. They are deallocated ** when the reference count reaches zero. ** ** 2. Use sqlite3RCStrUnref() to free an RCStr string rather than ** sqlite3_free() ** ** 3. Make a (read-only) copy of a read-only RCStr string using ** sqlite3RCStrRef(). ** ** "String" is in the name, but an RCStr object can also be used to hold ** binary data. */ struct RCStr { u64 nRCRef; /* Number of references */ /* Total structure size should be a multiple of 8 bytes for alignment */ }; /* ** A pointer to this structure is used to communicate information ** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback. */ typedef struct { sqlite3 *db; /* The database being initialized */ char **pzErrMsg; /* Error message stored here */ int iDb; /* 0 for main database. 1 for TEMP, 2.. for ATTACHed */ int rc; /* Result code stored here */ u32 mInitFlags; /* Flags controlling error messages */ u32 nInitRow; /* Number of rows processed */ Pgno mxPage; /* Maximum page number. 0 for no limit. */ } InitData; /* ** Allowed values for mInitFlags */ #define INITFLAG_AlterMask 0x0003 /* Types of ALTER */ #define INITFLAG_AlterRename 0x0001 /* Reparse after a RENAME */ #define INITFLAG_AlterDrop 0x0002 /* Reparse after a DROP COLUMN */ #define INITFLAG_AlterAdd 0x0003 /* Reparse after an ADD COLUMN */ /* Tuning parameters are set using SQLITE_TESTCTRL_TUNE and are controlled ** on debug-builds of the CLI using ".testctrl tune ID VALUE". Tuning ** parameters are for temporary use during development, to help find ** optimal values for parameters in the query planner. The should not ** be used on trunk check-ins. They are a temporary mechanism available ** for transient development builds only. ** ** Tuning parameters are numbered starting with 1. */ #define SQLITE_NTUNE 6 /* Should be zero for all trunk check-ins */ #ifdef SQLITE_DEBUG # define Tuning(X) (sqlite3Config.aTune[(X)-1]) #else # define Tuning(X) 0 #endif /* ** Structure containing global configuration data for the SQLite library. ** ** This structure also contains some state information. */ struct Sqlite3Config { int bMemstat; /* True to enable memory status */ u8 bCoreMutex; /* True to enable core mutexing */ u8 bFullMutex; /* True to enable full mutexing */ u8 bOpenUri; /* True to interpret filenames as URIs */ u8 bUseCis; /* Use covering indices for full-scans */ u8 bSmallMalloc; /* Avoid large memory allocations if true */ u8 bExtraSchemaChecks; /* Verify type,name,tbl_name in schema */ #ifdef SQLITE_DEBUG u8 bJsonSelfcheck; /* Double-check JSON parsing */ #endif int mxStrlen; /* Maximum string length */ int neverCorrupt; /* Database is always well-formed */ int szLookaside; /* Default lookaside buffer size */ int nLookaside; /* Default lookaside buffer count */ int nStmtSpill; /* Stmt-journal spill-to-disk threshold */ sqlite3_mem_methods m; /* Low-level memory allocation interface */ sqlite3_mutex_methods mutex; /* Low-level mutex interface */ sqlite3_pcache_methods2 pcache2; /* Low-level page-cache interface */ void *pHeap; /* Heap storage space */ int nHeap; /* Size of pHeap[] */ int mnReq, mxReq; /* Min and max heap requests sizes */ sqlite3_int64 szMmap; /* mmap() space per open file */ sqlite3_int64 mxMmap; /* Maximum value for szMmap */ void *pPage; /* Page cache memory */ int szPage; /* Size of each page in pPage[] */ int nPage; /* Number of pages in pPage[] */ int mxParserStack; /* maximum depth of the parser stack */ int sharedCacheEnabled; /* true if shared-cache mode enabled */ u32 szPma; /* Maximum Sorter PMA size */ /* The above might be initialized to non-zero. The following need to always ** initially be zero, however. */ int isInit; /* True after initialization has finished */ int inProgress; /* True while initialization in progress */ int isMutexInit; /* True after mutexes are initialized */ int isMallocInit; /* True after malloc is initialized */ int isPCacheInit; /* True after malloc is initialized */ int nRefInitMutex; /* Number of users of pInitMutex */ sqlite3_mutex *pInitMutex; /* Mutex used by sqlite3_initialize() */ void (*xLog)(void*,int,const char*); /* Function for logging */ void *pLogArg; /* First argument to xLog() */ #ifdef SQLITE_ENABLE_SQLLOG void(*xSqllog)(void*,sqlite3*,const char*, int); void *pSqllogArg; #endif #ifdef SQLITE_VDBE_COVERAGE /* The following callback (if not NULL) is invoked on every VDBE branch ** operation. Set the callback using SQLITE_TESTCTRL_VDBE_COVERAGE. */ void (*xVdbeBranch)(void*,unsigned iSrcLine,u8 eThis,u8 eMx); /* Callback */ void *pVdbeBranchArg; /* 1st argument */ #endif #ifndef SQLITE_OMIT_DESERIALIZE sqlite3_int64 mxMemdbSize; /* Default max memdb size */ #endif #ifndef SQLITE_UNTESTABLE int (*xTestCallback)(int); /* Invoked by sqlite3FaultSim() */ #endif #ifdef SQLITE_ALLOW_ROWID_IN_VIEW u32 mNoVisibleRowid; /* TF_NoVisibleRowid if the ROWID_IN_VIEW ** feature is disabled. 0 if rowids can ** occur in views. */ #endif int bLocaltimeFault; /* True to fail localtime() calls */ int (*xAltLocaltime)(const void*,void*); /* Alternative localtime() routine */ int iOnceResetThreshold; /* When to reset OP_Once counters */ u32 szSorterRef; /* Min size in bytes to use sorter-refs */ unsigned int iPrngSeed; /* Alternative fixed seed for the PRNG */ /* vvvv--- must be last ---vvv */ #ifdef SQLITE_DEBUG sqlite3_int64 aTune[SQLITE_NTUNE]; /* Tuning parameters */ #endif }; /* ** This macro is used inside of assert() statements to indicate that ** the assert is only valid on a well-formed database. Instead of: ** ** assert( X ); ** ** One writes: ** ** assert( X || CORRUPT_DB ); ** ** CORRUPT_DB is true during normal operation. CORRUPT_DB does not indicate ** that the database is definitely corrupt, only that it might be corrupt. ** For most test cases, CORRUPT_DB is set to false using a special ** sqlite3_test_control(). This enables assert() statements to prove ** things that are always true for well-formed databases. */ #define CORRUPT_DB (sqlite3Config.neverCorrupt==0) /* ** Context pointer passed down through the tree-walk. */ struct Walker { Parse *pParse; /* Parser context. */ int (*xExprCallback)(Walker*, Expr*); /* Callback for expressions */ int (*xSelectCallback)(Walker*,Select*); /* Callback for SELECTs */ void (*xSelectCallback2)(Walker*,Select*);/* Second callback for SELECTs */ int walkerDepth; /* Number of subqueries */ u16 eCode; /* A small processing code */ u16 mWFlags; /* Use-dependent flags */ union { /* Extra data for callback */ NameContext *pNC; /* Naming context */ int n; /* A counter */ int iCur; /* A cursor number */ SrcList *pSrcList; /* FROM clause */ struct CCurHint *pCCurHint; /* Used by codeCursorHint() */ struct RefSrcList *pRefSrcList; /* sqlite3ReferencesSrcList() */ int *aiCol; /* array of column indexes */ struct IdxCover *pIdxCover; /* Check for index coverage */ ExprList *pGroupBy; /* GROUP BY clause */ Select *pSelect; /* HAVING to WHERE clause ctx */ struct WindowRewrite *pRewrite; /* Window rewrite context */ struct WhereConst *pConst; /* WHERE clause constants */ struct RenameCtx *pRename; /* RENAME COLUMN context */ struct Table *pTab; /* Table of generated column */ struct CoveringIndexCheck *pCovIdxCk; /* Check for covering index */ SrcItem *pSrcItem; /* A single FROM clause item */ DbFixer *pFix; /* See sqlite3FixSelect() */ Mem *aMem; /* See sqlite3BtreeCursorHint() */ } u; }; /* ** The following structure contains information used by the sqliteFix... ** routines as they walk the parse tree to make database references ** explicit. */ struct DbFixer { Parse *pParse; /* The parsing context. Error messages written here */ Walker w; /* Walker object */ Schema *pSchema; /* Fix items to this schema */ u8 bTemp; /* True for TEMP schema entries */ const char *zDb; /* Make sure all objects are contained in this database */ const char *zType; /* Type of the container - used for error messages */ const Token *pName; /* Name of the container - used for error messages */ }; /* Forward declarations */ int sqlite3WalkExpr(Walker*, Expr*); int sqlite3WalkExprNN(Walker*, Expr*); int sqlite3WalkExprList(Walker*, ExprList*); int sqlite3WalkSelect(Walker*, Select*); int sqlite3WalkSelectExpr(Walker*, Select*); int sqlite3WalkSelectFrom(Walker*, Select*); int sqlite3ExprWalkNoop(Walker*, Expr*); int sqlite3SelectWalkNoop(Walker*, Select*); int sqlite3SelectWalkFail(Walker*, Select*); int sqlite3WalkerDepthIncrease(Walker*,Select*); void sqlite3WalkerDepthDecrease(Walker*,Select*); void sqlite3WalkWinDefnDummyCallback(Walker*,Select*); #ifdef SQLITE_DEBUG void sqlite3SelectWalkAssert2(Walker*, Select*); #endif #ifndef SQLITE_OMIT_CTE void sqlite3SelectPopWith(Walker*, Select*); #else # define sqlite3SelectPopWith 0 #endif /* ** Return code from the parse-tree walking primitives and their ** callbacks. */ #define WRC_Continue 0 /* Continue down into children */ #define WRC_Prune 1 /* Omit children but continue walking siblings */ #define WRC_Abort 2 /* Abandon the tree walk */ /* ** A single common table expression */ struct Cte { char *zName; /* Name of this CTE */ ExprList *pCols; /* List of explicit column names, or NULL */ Select *pSelect; /* The definition of this CTE */ const char *zCteErr; /* Error message for circular references */ CteUse *pUse; /* Usage information for this CTE */ u8 eM10d; /* The MATERIALIZED flag */ }; /* ** Allowed values for the materialized flag (eM10d): */ #define M10d_Yes 0 /* AS MATERIALIZED */ #define M10d_Any 1 /* Not specified. Query planner's choice */ #define M10d_No 2 /* AS NOT MATERIALIZED */ /* ** An instance of the With object represents a WITH clause containing ** one or more CTEs (common table expressions). */ struct With { int nCte; /* Number of CTEs in the WITH clause */ int bView; /* Belongs to the outermost Select of a view */ With *pOuter; /* Containing WITH clause, or NULL */ Cte a[1]; /* For each CTE in the WITH clause.... */ }; /* ** The Cte object is not guaranteed to persist for the entire duration ** of code generation. (The query flattener or other parser tree ** edits might delete it.) The following object records information ** about each Common Table Expression that must be preserved for the ** duration of the parse. ** ** The CteUse objects are freed using sqlite3ParserAddCleanup() rather ** than sqlite3SelectDelete(), which is what enables them to persist ** until the end of code generation. */ struct CteUse { int nUse; /* Number of users of this CTE */ int addrM9e; /* Start of subroutine to compute materialization */ int regRtn; /* Return address register for addrM9e subroutine */ int iCur; /* Ephemeral table holding the materialization */ LogEst nRowEst; /* Estimated number of rows in the table */ u8 eM10d; /* The MATERIALIZED flag */ }; /* Client data associated with sqlite3_set_clientdata() and ** sqlite3_get_clientdata(). */ struct DbClientData { DbClientData *pNext; /* Next in a linked list */ void *pData; /* The data */ void (*xDestructor)(void*); /* Destructor. Might be NULL */ char zName[1]; /* Name of this client data. MUST BE LAST */ }; #ifdef SQLITE_DEBUG /* ** An instance of the TreeView object is used for printing the content of ** data structures on sqlite3DebugPrintf() using a tree-like view. */ struct TreeView { int iLevel; /* Which level of the tree we are on */ u8 bLine[100]; /* Draw vertical in column i if bLine[i] is true */ }; #endif /* SQLITE_DEBUG */ /* ** This object is used in various ways, most (but not all) related to window ** functions. ** ** (1) A single instance of this structure is attached to the ** the Expr.y.pWin field for each window function in an expression tree. ** This object holds the information contained in the OVER clause, ** plus additional fields used during code generation. ** ** (2) All window functions in a single SELECT form a linked-list ** attached to Select.pWin. The Window.pFunc and Window.pExpr ** fields point back to the expression that is the window function. ** ** (3) The terms of the WINDOW clause of a SELECT are instances of this ** object on a linked list attached to Select.pWinDefn. ** ** (4) For an aggregate function with a FILTER clause, an instance ** of this object is stored in Expr.y.pWin with eFrmType set to ** TK_FILTER. In this case the only field used is Window.pFilter. ** ** The uses (1) and (2) are really the same Window object that just happens ** to be accessible in two different ways. Use case (3) are separate objects. */ struct Window { char *zName; /* Name of window (may be NULL) */ char *zBase; /* Name of base window for chaining (may be NULL) */ ExprList *pPartition; /* PARTITION BY clause */ ExprList *pOrderBy; /* ORDER BY clause */ u8 eFrmType; /* TK_RANGE, TK_GROUPS, TK_ROWS, or 0 */ u8 eStart; /* UNBOUNDED, CURRENT, PRECEDING or FOLLOWING */ u8 eEnd; /* UNBOUNDED, CURRENT, PRECEDING or FOLLOWING */ u8 bImplicitFrame; /* True if frame was implicitly specified */ u8 eExclude; /* TK_NO, TK_CURRENT, TK_TIES, TK_GROUP, or 0 */ Expr *pStart; /* Expression for "<expr> PRECEDING" */ Expr *pEnd; /* Expression for "<expr> FOLLOWING" */ Window **ppThis; /* Pointer to this object in Select.pWin list */ Window *pNextWin; /* Next window function belonging to this SELECT */ Expr *pFilter; /* The FILTER expression */ FuncDef *pWFunc; /* The function */ int iEphCsr; /* Partition buffer or Peer buffer */ int regAccum; /* Accumulator */ int regResult; /* Interim result */ int csrApp; /* Function cursor (used by min/max) */ int regApp; /* Function register (also used by min/max) */ int regPart; /* Array of registers for PARTITION BY values */ Expr *pOwner; /* Expression object this window is attached to */ int nBufferCol; /* Number of columns in buffer table */ int iArgCol; /* Offset of first argument for this function */ int regOne; /* Register containing constant value 1 */ int regStartRowid; int regEndRowid; u8 bExprArgs; /* Defer evaluation of window function arguments ** due to the SQLITE_SUBTYPE flag */ }; Select *sqlite3MultiValues(Parse *pParse, Select *pLeft, ExprList *pRow); void sqlite3MultiValuesEnd(Parse *pParse, Select *pVal); #ifndef SQLITE_OMIT_WINDOWFUNC void sqlite3WindowDelete(sqlite3*, Window*); void sqlite3WindowUnlinkFromSelect(Window*); void sqlite3WindowListDelete(sqlite3 *db, Window *p); Window *sqlite3WindowAlloc(Parse*, int, int, Expr*, int , Expr*, u8); void sqlite3WindowAttach(Parse*, Expr*, Window*); void sqlite3WindowLink(Select *pSel, Window *pWin); int sqlite3WindowCompare(const Parse*, const Window*, const Window*, int); void sqlite3WindowCodeInit(Parse*, Select*); void sqlite3WindowCodeStep(Parse*, Select*, WhereInfo*, int, int); int sqlite3WindowRewrite(Parse*, Select*); void sqlite3WindowUpdate(Parse*, Window*, Window*, FuncDef*); Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p); Window *sqlite3WindowListDup(sqlite3 *db, Window *p); void sqlite3WindowFunctions(void); void sqlite3WindowChain(Parse*, Window*, Window*); Window *sqlite3WindowAssemble(Parse*, Window*, ExprList*, ExprList*, Token*); #else # define sqlite3WindowDelete(a,b) # define sqlite3WindowFunctions() # define sqlite3WindowAttach(a,b,c) #endif /* ** Assuming zIn points to the first byte of a UTF-8 character, ** advance zIn to point to the first byte of the next UTF-8 character. */ #define SQLITE_SKIP_UTF8(zIn) { \ if( (*(zIn++))>=0xc0 ){ \ while( (*zIn & 0xc0)==0x80 ){ zIn++; } \ } \ } /* ** The SQLITE_*_BKPT macros are substitutes for the error codes with ** the same name but without the _BKPT suffix. These macros invoke ** routines that report the line-number on which the error originated ** using sqlite3_log(). The routines also provide a convenient place ** to set a debugger breakpoint. */ int sqlite3ReportError(int iErr, int lineno, const char *zType); int sqlite3CorruptError(int); int sqlite3MisuseError(int); int sqlite3CantopenError(int); #define SQLITE_CORRUPT_BKPT sqlite3CorruptError(__LINE__) #define SQLITE_MISUSE_BKPT sqlite3MisuseError(__LINE__) #define SQLITE_CANTOPEN_BKPT sqlite3CantopenError(__LINE__) #ifdef SQLITE_DEBUG int sqlite3NomemError(int); int sqlite3IoerrnomemError(int); # define SQLITE_NOMEM_BKPT sqlite3NomemError(__LINE__) # define SQLITE_IOERR_NOMEM_BKPT sqlite3IoerrnomemError(__LINE__) #else # define SQLITE_NOMEM_BKPT SQLITE_NOMEM # define SQLITE_IOERR_NOMEM_BKPT SQLITE_IOERR_NOMEM #endif #if defined(SQLITE_DEBUG) || defined(SQLITE_ENABLE_CORRUPT_PGNO) int sqlite3CorruptPgnoError(int,Pgno); # define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P)) #else # define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptError(__LINE__) #endif /* ** FTS3 and FTS4 both require virtual table support */ #if defined(SQLITE_OMIT_VIRTUALTABLE) # undef SQLITE_ENABLE_FTS3 # undef SQLITE_ENABLE_FTS4 #endif /* ** FTS4 is really an extension for FTS3. It is enabled using the ** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also call ** the SQLITE_ENABLE_FTS4 macro to serve as an alias for SQLITE_ENABLE_FTS3. */ #if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3) # define SQLITE_ENABLE_FTS3 1 #endif /* ** The following macros mimic the standard library functions toupper(), ** isspace(), isalnum(), isdigit() and isxdigit(), respectively. The ** sqlite versions only work for ASCII characters, regardless of locale. */ #ifdef SQLITE_ASCII # define sqlite3Toupper(x) ((x)&~(sqlite3CtypeMap[(unsigned char)(x)]&0x20)) # define sqlite3Isspace(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x01) # define sqlite3Isalnum(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x06) # define sqlite3Isalpha(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x02) # define sqlite3Isdigit(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x04) # define sqlite3Isxdigit(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x08) # define sqlite3Tolower(x) (sqlite3UpperToLower[(unsigned char)(x)]) # define sqlite3Isquote(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x80) # define sqlite3JsonId1(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x42) # define sqlite3JsonId2(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x46) #else # define sqlite3Toupper(x) toupper((unsigned char)(x)) # define sqlite3Isspace(x) isspace((unsigned char)(x)) # define sqlite3Isalnum(x) isalnum((unsigned char)(x)) # define sqlite3Isalpha(x) isalpha((unsigned char)(x)) # define sqlite3Isdigit(x) isdigit((unsigned char)(x)) # define sqlite3Isxdigit(x) isxdigit((unsigned char)(x)) # define sqlite3Tolower(x) tolower((unsigned char)(x)) # define sqlite3Isquote(x) ((x)=='"'||(x)=='\''||(x)=='['||(x)=='`') # define sqlite3JsonId1(x) (sqlite3IsIdChar(x)&&(x)<'0') # define sqlite3JsonId2(x) sqlite3IsIdChar(x) #endif int sqlite3IsIdChar(u8); /* ** Internal function prototypes */ int sqlite3StrICmp(const char*,const char*); int sqlite3Strlen30(const char*); #define sqlite3Strlen30NN(C) (strlen(C)&0x3fffffff) char *sqlite3ColumnType(Column*,char*); #define sqlite3StrNICmp sqlite3_strnicmp int sqlite3MallocInit(void); void sqlite3MallocEnd(void); void *sqlite3Malloc(u64); void *sqlite3MallocZero(u64); void *sqlite3DbMallocZero(sqlite3*, u64); void *sqlite3DbMallocRaw(sqlite3*, u64); void *sqlite3DbMallocRawNN(sqlite3*, u64); char *sqlite3DbStrDup(sqlite3*,const char*); char *sqlite3DbStrNDup(sqlite3*,const char*, u64); char *sqlite3DbSpanDup(sqlite3*,const char*,const char*); void *sqlite3Realloc(void*, u64); void *sqlite3DbReallocOrFree(sqlite3 *, void *, u64); void *sqlite3DbRealloc(sqlite3 *, void *, u64); void sqlite3DbFree(sqlite3*, void*); void sqlite3DbFreeNN(sqlite3*, void*); void sqlite3DbNNFreeNN(sqlite3*, void*); int sqlite3MallocSize(const void*); int sqlite3DbMallocSize(sqlite3*, const void*); void *sqlite3PageMalloc(int); void sqlite3PageFree(void*); void sqlite3MemSetDefault(void); #ifndef SQLITE_UNTESTABLE void sqlite3BenignMallocHooks(void (*)(void), void (*)(void)); #endif int sqlite3HeapNearlyFull(void); /* ** On systems with ample stack space and that support alloca(), make ** use of alloca() to obtain space for large automatic objects. By default, ** obtain space from malloc(). ** ** The alloca() routine never returns NULL. This will cause code paths ** that deal with sqlite3StackAlloc() failures to be unreachable. */ #ifdef SQLITE_USE_ALLOCA # define sqlite3StackAllocRaw(D,N) alloca(N) # define sqlite3StackAllocRawNN(D,N) alloca(N) # define sqlite3StackFree(D,P) # define sqlite3StackFreeNN(D,P) #else # define sqlite3StackAllocRaw(D,N) sqlite3DbMallocRaw(D,N) # define sqlite3StackAllocRawNN(D,N) sqlite3DbMallocRawNN(D,N) # define sqlite3StackFree(D,P) sqlite3DbFree(D,P) # define sqlite3StackFreeNN(D,P) sqlite3DbFreeNN(D,P) #endif /* Do not allow both MEMSYS5 and MEMSYS3 to be defined together. If they ** are, disable MEMSYS3 */ #ifdef SQLITE_ENABLE_MEMSYS5 const sqlite3_mem_methods *sqlite3MemGetMemsys5(void); #undef SQLITE_ENABLE_MEMSYS3 #endif #ifdef SQLITE_ENABLE_MEMSYS3 const sqlite3_mem_methods *sqlite3MemGetMemsys3(void); #endif #ifndef SQLITE_MUTEX_OMIT sqlite3_mutex_methods const *sqlite3DefaultMutex(void); sqlite3_mutex_methods const *sqlite3NoopMutex(void); sqlite3_mutex *sqlite3MutexAlloc(int); int sqlite3MutexInit(void); int sqlite3MutexEnd(void); #endif #if !defined(SQLITE_MUTEX_OMIT) && !defined(SQLITE_MUTEX_NOOP) void sqlite3MemoryBarrier(void); #else # define sqlite3MemoryBarrier() #endif sqlite3_int64 sqlite3StatusValue(int); void sqlite3StatusUp(int, int); void sqlite3StatusDown(int, int); void sqlite3StatusHighwater(int, int); int sqlite3LookasideUsed(sqlite3*,int*); /* Access to mutexes used by sqlite3_status() */ sqlite3_mutex *sqlite3Pcache1Mutex(void); sqlite3_mutex *sqlite3MallocMutex(void); #if defined(SQLITE_ENABLE_MULTITHREADED_CHECKS) && !defined(SQLITE_MUTEX_OMIT) void sqlite3MutexWarnOnContention(sqlite3_mutex*); #else # define sqlite3MutexWarnOnContention(x) #endif #ifndef SQLITE_OMIT_FLOATING_POINT # define EXP754 (((u64)0x7ff)<<52) # define MAN754 ((((u64)1)<<52)-1) # define IsNaN(X) (((X)&EXP754)==EXP754 && ((X)&MAN754)!=0) # define IsOvfl(X) (((X)&EXP754)==EXP754) int sqlite3IsNaN(double); int sqlite3IsOverflow(double); #else # define IsNaN(X) 0 # define sqlite3IsNaN(X) 0 # define sqlite3IsOVerflow(X) 0 #endif /* ** An instance of the following structure holds information about SQL ** functions arguments that are the parameters to the printf() function. */ struct PrintfArguments { int nArg; /* Total number of arguments */ int nUsed; /* Number of arguments used so far */ sqlite3_value **apArg; /* The argument values */ }; /* ** An instance of this object receives the decoding of a floating point ** value into an approximate decimal representation. */ struct FpDecode { char sign; /* '+' or '-' */ char isSpecial; /* 1: Infinity 2: NaN */ int n; /* Significant digits in the decode */ int iDP; /* Location of the decimal point */ char *z; /* Start of significant digits */ char zBuf[24]; /* Storage for significant digits */ }; void sqlite3FpDecode(FpDecode*,double,int,int); char *sqlite3MPrintf(sqlite3*,const char*, ...); char *sqlite3VMPrintf(sqlite3*,const char*, va_list); #if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) void sqlite3DebugPrintf(const char*, ...); #endif #if defined(SQLITE_TEST) void *sqlite3TestTextToPtr(const char*); #endif #if defined(SQLITE_DEBUG) void sqlite3TreeViewLine(TreeView*, const char *zFormat, ...); void sqlite3TreeViewExpr(TreeView*, const Expr*, u8); void sqlite3TreeViewBareExprList(TreeView*, const ExprList*, const char*); void sqlite3TreeViewExprList(TreeView*, const ExprList*, u8, const char*); void sqlite3TreeViewBareIdList(TreeView*, const IdList*, const char*); void sqlite3TreeViewIdList(TreeView*, const IdList*, u8, const char*); void sqlite3TreeViewColumnList(TreeView*, const Column*, int, u8); void sqlite3TreeViewSrcList(TreeView*, const SrcList*); void sqlite3TreeViewSelect(TreeView*, const Select*, u8); void sqlite3TreeViewWith(TreeView*, const With*, u8); void sqlite3TreeViewUpsert(TreeView*, const Upsert*, u8); #if TREETRACE_ENABLED void sqlite3TreeViewDelete(const With*, const SrcList*, const Expr*, const ExprList*,const Expr*, const Trigger*); void sqlite3TreeViewInsert(const With*, const SrcList*, const IdList*, const Select*, const ExprList*, int, const Upsert*, const Trigger*); void sqlite3TreeViewUpdate(const With*, const SrcList*, const ExprList*, const Expr*, int, const ExprList*, const Expr*, const Upsert*, const Trigger*); #endif #ifndef SQLITE_OMIT_TRIGGER void sqlite3TreeViewTriggerStep(TreeView*, const TriggerStep*, u8, u8); void sqlite3TreeViewTrigger(TreeView*, const Trigger*, u8, u8); #endif #ifndef SQLITE_OMIT_WINDOWFUNC void sqlite3TreeViewWindow(TreeView*, const Window*, u8); void sqlite3TreeViewWinFunc(TreeView*, const Window*, u8); #endif void sqlite3ShowExpr(const Expr*); void sqlite3ShowExprList(const ExprList*); void sqlite3ShowIdList(const IdList*); void sqlite3ShowSrcList(const SrcList*); void sqlite3ShowSelect(const Select*); void sqlite3ShowWith(const With*); void sqlite3ShowUpsert(const Upsert*); #ifndef SQLITE_OMIT_TRIGGER void sqlite3ShowTriggerStep(const TriggerStep*); void sqlite3ShowTriggerStepList(const TriggerStep*); void sqlite3ShowTrigger(const Trigger*); void sqlite3ShowTriggerList(const Trigger*); #endif #ifndef SQLITE_OMIT_WINDOWFUNC void sqlite3ShowWindow(const Window*); void sqlite3ShowWinFunc(const Window*); #endif #endif void sqlite3SetString(char **, sqlite3*, const char*); void sqlite3ProgressCheck(Parse*); void sqlite3ErrorMsg(Parse*, const char*, ...); int sqlite3ErrorToParser(sqlite3*,int); void sqlite3Dequote(char*); void sqlite3DequoteExpr(Expr*); void sqlite3DequoteToken(Token*); void sqlite3DequoteNumber(Parse*, Expr*); void sqlite3TokenInit(Token*,char*); int sqlite3KeywordCode(const unsigned char*, int); int sqlite3RunParser(Parse*, const char*); void sqlite3FinishCoding(Parse*); int sqlite3GetTempReg(Parse*); void sqlite3ReleaseTempReg(Parse*,int); int sqlite3GetTempRange(Parse*,int); void sqlite3ReleaseTempRange(Parse*,int,int); void sqlite3ClearTempRegCache(Parse*); void sqlite3TouchRegister(Parse*,int); #if defined(SQLITE_ENABLE_STAT4) || defined(SQLITE_DEBUG) int sqlite3FirstAvailableRegister(Parse*,int); #endif #ifdef SQLITE_DEBUG int sqlite3NoTempsInRange(Parse*,int,int); #endif Expr *sqlite3ExprAlloc(sqlite3*,int,const Token*,int); Expr *sqlite3Expr(sqlite3*,int,const char*); void sqlite3ExprAttachSubtrees(sqlite3*,Expr*,Expr*,Expr*); Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*); void sqlite3PExprAddSelect(Parse*, Expr*, Select*); Expr *sqlite3ExprAnd(Parse*,Expr*, Expr*); Expr *sqlite3ExprSimplifiedAndOr(Expr*); Expr *sqlite3ExprFunction(Parse*,ExprList*, const Token*, int); void sqlite3ExprAddFunctionOrderBy(Parse*,Expr*,ExprList*); void sqlite3ExprOrderByAggregateError(Parse*,Expr*); void sqlite3ExprFunctionUsable(Parse*,const Expr*,const FuncDef*); void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32); void sqlite3ExprDelete(sqlite3*, Expr*); void sqlite3ExprDeleteGeneric(sqlite3*,void*); int sqlite3ExprDeferredDelete(Parse*, Expr*); void sqlite3ExprUnmapAndDelete(Parse*, Expr*); ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*); ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*); Select *sqlite3ExprListToValues(Parse*, int, ExprList*); void sqlite3ExprListSetSortOrder(ExprList*,int,int); void sqlite3ExprListSetName(Parse*,ExprList*,const Token*,int); void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*); void sqlite3ExprListDelete(sqlite3*, ExprList*); void sqlite3ExprListDeleteGeneric(sqlite3*,void*); u32 sqlite3ExprListFlags(const ExprList*); int sqlite3IndexHasDuplicateRootPage(Index*); int sqlite3Init(sqlite3*, char**); int sqlite3InitCallback(void*, int, char**, char**); int sqlite3InitOne(sqlite3*, int, char**, u32); void sqlite3Pragma(Parse*,Token*,Token*,Token*,int); #ifndef SQLITE_OMIT_VIRTUALTABLE Module *sqlite3PragmaVtabRegister(sqlite3*,const char *zName); #endif void sqlite3ResetAllSchemasOfConnection(sqlite3*); void sqlite3ResetOneSchema(sqlite3*,int); void sqlite3CollapseDatabaseArray(sqlite3*); void sqlite3CommitInternalChanges(sqlite3*); void sqlite3ColumnSetExpr(Parse*,Table*,Column*,Expr*); Expr *sqlite3ColumnExpr(Table*,Column*); void sqlite3ColumnSetColl(sqlite3*,Column*,const char*zColl); const char *sqlite3ColumnColl(Column*); void sqlite3DeleteColumnNames(sqlite3*,Table*); void sqlite3GenerateColumnNames(Parse *pParse, Select *pSelect); int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**); void sqlite3SubqueryColumnTypes(Parse*,Table*,Select*,char); Table *sqlite3ResultSetOfSelect(Parse*,Select*,char); void sqlite3OpenSchemaTable(Parse *, int); Index *sqlite3PrimaryKeyIndex(Table*); i16 sqlite3TableColumnToIndex(Index*, i16); #ifdef SQLITE_OMIT_GENERATED_COLUMNS # define sqlite3TableColumnToStorage(T,X) (X) /* No-op pass-through */ # define sqlite3StorageColumnToTable(T,X) (X) /* No-op pass-through */ #else i16 sqlite3TableColumnToStorage(Table*, i16); i16 sqlite3StorageColumnToTable(Table*, i16); #endif void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int); #if SQLITE_ENABLE_HIDDEN_COLUMNS void sqlite3ColumnPropertiesFromName(Table*, Column*); #else # define sqlite3ColumnPropertiesFromName(T,C) /* no-op */ #endif void sqlite3AddColumn(Parse*,Token,Token); void sqlite3AddNotNull(Parse*, int); void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int); void sqlite3AddCheckConstraint(Parse*, Expr*, const char*, const char*); void sqlite3AddDefaultValue(Parse*,Expr*,const char*,const char*); void sqlite3AddCollateType(Parse*, Token*); void sqlite3AddGenerated(Parse*,Expr*,Token*); void sqlite3EndTable(Parse*,Token*,Token*,u32,Select*); void sqlite3AddReturning(Parse*,ExprList*); int sqlite3ParseUri(const char*,const char*,unsigned int*, sqlite3_vfs**,char**,char **); #define sqlite3CodecQueryParameters(A,B,C) 0 Btree *sqlite3DbNameToBtree(sqlite3*,const char*); #ifdef SQLITE_UNTESTABLE # define sqlite3FaultSim(X) SQLITE_OK #else int sqlite3FaultSim(int); #endif Bitvec *sqlite3BitvecCreate(u32); int sqlite3BitvecTest(Bitvec*, u32); int sqlite3BitvecTestNotNull(Bitvec*, u32); int sqlite3BitvecSet(Bitvec*, u32); void sqlite3BitvecClear(Bitvec*, u32, void*); void sqlite3BitvecDestroy(Bitvec*); u32 sqlite3BitvecSize(Bitvec*); #ifndef SQLITE_UNTESTABLE int sqlite3BitvecBuiltinTest(int,int*); #endif RowSet *sqlite3RowSetInit(sqlite3*); void sqlite3RowSetDelete(void*); void sqlite3RowSetClear(void*); void sqlite3RowSetInsert(RowSet*, i64); int sqlite3RowSetTest(RowSet*, int iBatch, i64); int sqlite3RowSetNext(RowSet*, i64*); void sqlite3CreateView(Parse*,Token*,Token*,Token*,ExprList*,Select*,int,int); #if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) int sqlite3ViewGetColumnNames(Parse*,Table*); #else # define sqlite3ViewGetColumnNames(A,B) 0 #endif #if SQLITE_MAX_ATTACHED>30 int sqlite3DbMaskAllZero(yDbMask); #endif void sqlite3DropTable(Parse*, SrcList*, int, int); void sqlite3CodeDropTable(Parse*, Table*, int, int); void sqlite3DeleteTable(sqlite3*, Table*); void sqlite3DeleteTableGeneric(sqlite3*, void*); void sqlite3FreeIndex(sqlite3*, Index*); #ifndef SQLITE_OMIT_AUTOINCREMENT void sqlite3AutoincrementBegin(Parse *pParse); void sqlite3AutoincrementEnd(Parse *pParse); #else # define sqlite3AutoincrementBegin(X) # define sqlite3AutoincrementEnd(X) #endif void sqlite3Insert(Parse*, SrcList*, Select*, IdList*, int, Upsert*); #ifndef SQLITE_OMIT_GENERATED_COLUMNS void sqlite3ComputeGeneratedColumns(Parse*, int, Table*); #endif void *sqlite3ArrayAllocate(sqlite3*,void*,int,int*,int*); IdList *sqlite3IdListAppend(Parse*, IdList*, Token*); int sqlite3IdListIndex(IdList*,const char*); SrcList *sqlite3SrcListEnlarge(Parse*, SrcList*, int, int); SrcList *sqlite3SrcListAppendList(Parse *pParse, SrcList *p1, SrcList *p2); SrcList *sqlite3SrcListAppend(Parse*, SrcList*, Token*, Token*); void sqlite3SubqueryDelete(sqlite3*,Subquery*); Select *sqlite3SubqueryDetach(sqlite3*,SrcItem*); int sqlite3SrcItemAttachSubquery(Parse*, SrcItem*, Select*, int); SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*, Token*, Select*, OnOrUsing*); void sqlite3SrcListIndexedBy(Parse *, SrcList *, Token *); void sqlite3SrcListFuncArgs(Parse*, SrcList*, ExprList*); int sqlite3IndexedByLookup(Parse *, SrcItem *); void sqlite3SrcListShiftJoinType(Parse*,SrcList*); void sqlite3SrcListAssignCursors(Parse*, SrcList*); void sqlite3IdListDelete(sqlite3*, IdList*); void sqlite3ClearOnOrUsing(sqlite3*, OnOrUsing*); void sqlite3SrcListDelete(sqlite3*, SrcList*); Index *sqlite3AllocateIndexObject(sqlite3*,i16,int,char**); void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*, Expr*, int, int, u8); void sqlite3DropIndex(Parse*, SrcList*, int); int sqlite3Select(Parse*, Select*, SelectDest*); Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*, Expr*,ExprList*,u32,Expr*); void sqlite3SelectDelete(sqlite3*, Select*); void sqlite3SelectDeleteGeneric(sqlite3*,void*); Table *sqlite3SrcListLookup(Parse*, SrcList*); int sqlite3IsReadOnly(Parse*, Table*, Trigger*); void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int); #if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY) Expr *sqlite3LimitWhere(Parse*,SrcList*,Expr*,ExprList*,Expr*,char*); #endif void sqlite3CodeChangeCount(Vdbe*,int,const char*); void sqlite3DeleteFrom(Parse*, SrcList*, Expr*, ExprList*, Expr*); void sqlite3Update(Parse*, SrcList*, ExprList*,Expr*,int,ExprList*,Expr*, Upsert*); WhereInfo *sqlite3WhereBegin(Parse*,SrcList*,Expr*,ExprList*, ExprList*,Select*,u16,int); void sqlite3WhereEnd(WhereInfo*); LogEst sqlite3WhereOutputRowCount(WhereInfo*); int sqlite3WhereIsDistinct(WhereInfo*); int sqlite3WhereIsOrdered(WhereInfo*); int sqlite3WhereOrderByLimitOptLabel(WhereInfo*); void sqlite3WhereMinMaxOptEarlyOut(Vdbe*,WhereInfo*); int sqlite3WhereIsSorted(WhereInfo*); int sqlite3WhereContinueLabel(WhereInfo*); int sqlite3WhereBreakLabel(WhereInfo*); int sqlite3WhereOkOnePass(WhereInfo*, int*); #define ONEPASS_OFF 0 /* Use of ONEPASS not allowed */ #define ONEPASS_SINGLE 1 /* ONEPASS valid for a single row update */ #define ONEPASS_MULTI 2 /* ONEPASS is valid for multiple rows */ int sqlite3WhereUsesDeferredSeek(WhereInfo*); void sqlite3ExprCodeLoadIndexColumn(Parse*, Index*, int, int, int); int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int, u8); void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int); void sqlite3ExprCodeMove(Parse*, int, int, int); void sqlite3ExprToRegister(Expr *pExpr, int iReg); void sqlite3ExprCode(Parse*, Expr*, int); #ifndef SQLITE_OMIT_GENERATED_COLUMNS void sqlite3ExprCodeGeneratedColumn(Parse*, Table*, Column*, int); #endif void sqlite3ExprCodeCopy(Parse*, Expr*, int); void sqlite3ExprCodeFactorable(Parse*, Expr*, int); int sqlite3ExprCodeRunJustOnce(Parse*, Expr*, int); int sqlite3ExprCodeTemp(Parse*, Expr*, int*); int sqlite3ExprCodeTarget(Parse*, Expr*, int); int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8); #define SQLITE_ECEL_DUP 0x01 /* Deep, not shallow copies */ #define SQLITE_ECEL_FACTOR 0x02 /* Factor out constant terms */ #define SQLITE_ECEL_REF 0x04 /* Use ExprList.u.x.iOrderByCol */ #define SQLITE_ECEL_OMITREF 0x08 /* Omit if ExprList.u.x.iOrderByCol */ void sqlite3ExprIfTrue(Parse*, Expr*, int, int); void sqlite3ExprIfFalse(Parse*, Expr*, int, int); void sqlite3ExprIfFalseDup(Parse*, Expr*, int, int); Table *sqlite3FindTable(sqlite3*,const char*, const char*); #define LOCATE_VIEW 0x01 #define LOCATE_NOERR 0x02 Table *sqlite3LocateTable(Parse*,u32 flags,const char*, const char*); const char *sqlite3PreferredTableName(const char*); Table *sqlite3LocateTableItem(Parse*,u32 flags,SrcItem *); Index *sqlite3FindIndex(sqlite3*,const char*, const char*); void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*); void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*); void sqlite3Vacuum(Parse*,Token*,Expr*); int sqlite3RunVacuum(char**, sqlite3*, int, sqlite3_value*); char *sqlite3NameFromToken(sqlite3*, const Token*); int sqlite3ExprCompare(const Parse*,const Expr*,const Expr*, int); int sqlite3ExprCompareSkip(Expr*,Expr*,int); int sqlite3ExprListCompare(const ExprList*,const ExprList*, int); int sqlite3ExprImpliesExpr(const Parse*,const Expr*,const Expr*, int); int sqlite3ExprImpliesNonNullRow(Expr*,int,int); void sqlite3AggInfoPersistWalkerInit(Walker*,Parse*); void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*); void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*); int sqlite3ExprCoveredByIndex(Expr*, int iCur, Index *pIdx); int sqlite3ReferencesSrcList(Parse*, Expr*, SrcList*); Vdbe *sqlite3GetVdbe(Parse*); #ifndef SQLITE_UNTESTABLE void sqlite3PrngSaveState(void); void sqlite3PrngRestoreState(void); #endif void sqlite3RollbackAll(sqlite3*,int); void sqlite3CodeVerifySchema(Parse*, int); void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb); void sqlite3BeginTransaction(Parse*, int); void sqlite3EndTransaction(Parse*,int); void sqlite3Savepoint(Parse*, int, Token*); void sqlite3CloseSavepoints(sqlite3 *); void sqlite3LeaveMutexAndCloseZombie(sqlite3*); u32 sqlite3IsTrueOrFalse(const char*); int sqlite3ExprIdToTrueFalse(Expr*); int sqlite3ExprTruthValue(const Expr*); int sqlite3ExprIsConstant(Parse*,Expr*); int sqlite3ExprIsConstantOrFunction(Expr*, u8); int sqlite3ExprIsConstantOrGroupBy(Parse*, Expr*, ExprList*); int sqlite3ExprIsSingleTableConstraint(Expr*,const SrcList*,int,int); #ifdef SQLITE_ENABLE_CURSOR_HINTS int sqlite3ExprContainsSubquery(Expr*); #endif int sqlite3ExprIsInteger(const Expr*, int*, Parse*); int sqlite3ExprCanBeNull(const Expr*); int sqlite3ExprNeedsNoAffinityChange(const Expr*, char); int sqlite3IsRowid(const char*); const char *sqlite3RowidAlias(Table *pTab); void sqlite3GenerateRowDelete( Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int); void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int); int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int); void sqlite3ResolvePartIdxLabel(Parse*,int); int sqlite3ExprReferencesUpdatedColumn(Expr*,int*,int); void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int, u8,u8,int,int*,int*,Upsert*); #ifdef SQLITE_ENABLE_NULL_TRIM void sqlite3SetMakeRecordP5(Vdbe*,Table*); #else # define sqlite3SetMakeRecordP5(A,B) #endif void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int); int sqlite3OpenTableAndIndices(Parse*, Table*, int, u8, int, u8*, int*, int*); void sqlite3BeginWriteOperation(Parse*, int, int); void sqlite3MultiWrite(Parse*); void sqlite3MayAbort(Parse*); void sqlite3HaltConstraint(Parse*, int, int, char*, i8, u8); void sqlite3UniqueConstraint(Parse*, int, Index*); void sqlite3RowidConstraint(Parse*, int, Table*); Expr *sqlite3ExprDup(sqlite3*,const Expr*,int); ExprList *sqlite3ExprListDup(sqlite3*,const ExprList*,int); SrcList *sqlite3SrcListDup(sqlite3*,const SrcList*,int); IdList *sqlite3IdListDup(sqlite3*,const IdList*); Select *sqlite3SelectDup(sqlite3*,const Select*,int); FuncDef *sqlite3FunctionSearch(int,const char*); void sqlite3InsertBuiltinFuncs(FuncDef*,int); FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,u8,u8); void sqlite3QuoteValue(StrAccum*,sqlite3_value*); void sqlite3RegisterBuiltinFunctions(void); void sqlite3RegisterDateTimeFunctions(void); void sqlite3RegisterJsonFunctions(void); void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3*); #if !defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_OMIT_JSON) int sqlite3JsonTableFunctions(sqlite3*); #endif int sqlite3SafetyCheckOk(sqlite3*); int sqlite3SafetyCheckSickOrOk(sqlite3*); void sqlite3ChangeCookie(Parse*, int); With *sqlite3WithDup(sqlite3 *db, With *p); #if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) void sqlite3MaterializeView(Parse*, Table*, Expr*, ExprList*,Expr*,int); #endif #ifndef SQLITE_OMIT_TRIGGER void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*, Expr*,int, int); void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*); void sqlite3DropTrigger(Parse*, SrcList*, int); void sqlite3DropTriggerPtr(Parse*, Trigger*); Trigger *sqlite3TriggersExist(Parse *, Table*, int, ExprList*, int *pMask); Trigger *sqlite3TriggerList(Parse *, Table *); void sqlite3CodeRowTrigger(Parse*, Trigger *, int, ExprList*, int, Table *, int, int, int); void sqlite3CodeRowTriggerDirect(Parse *, Trigger *, Table *, int, int, int); void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*); void sqlite3DeleteTriggerStep(sqlite3*, TriggerStep*); TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*, const char*,const char*); TriggerStep *sqlite3TriggerInsertStep(Parse*,Token*, IdList*, Select*,u8,Upsert*, const char*,const char*); TriggerStep *sqlite3TriggerUpdateStep(Parse*,Token*,SrcList*,ExprList*, Expr*, u8, const char*,const char*); TriggerStep *sqlite3TriggerDeleteStep(Parse*,Token*, Expr*, const char*,const char*); void sqlite3DeleteTrigger(sqlite3*, Trigger*); void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*); u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int); SrcList *sqlite3TriggerStepSrc(Parse*, TriggerStep*); # define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p)) # define sqlite3IsToplevel(p) ((p)->pToplevel==0) #else # define sqlite3TriggersExist(B,C,D,E,F) 0 # define sqlite3DeleteTrigger(A,B) # define sqlite3DropTriggerPtr(A,B) # define sqlite3UnlinkAndDeleteTrigger(A,B,C) # define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I) # define sqlite3CodeRowTriggerDirect(A,B,C,D,E,F) # define sqlite3TriggerList(X, Y) 0 # define sqlite3ParseToplevel(p) p # define sqlite3IsToplevel(p) 1 # define sqlite3TriggerColmask(A,B,C,D,E,F,G) 0 # define sqlite3TriggerStepSrc(A,B) 0 #endif int sqlite3JoinType(Parse*, Token*, Token*, Token*); int sqlite3ColumnIndex(Table *pTab, const char *zCol); void sqlite3SrcItemColumnUsed(SrcItem*,int); void sqlite3SetJoinExpr(Expr*,int,u32); void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int); void sqlite3DeferForeignKey(Parse*, int); #ifndef SQLITE_OMIT_AUTHORIZATION void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*); int sqlite3AuthCheck(Parse*,int, const char*, const char*, const char*); void sqlite3AuthContextPush(Parse*, AuthContext*, const char*); void sqlite3AuthContextPop(AuthContext*); int sqlite3AuthReadCol(Parse*, const char *, const char *, int); #else # define sqlite3AuthRead(a,b,c,d) # define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK # define sqlite3AuthContextPush(a,b,c) # define sqlite3AuthContextPop(a) ((void)(a)) #endif int sqlite3DbIsNamed(sqlite3 *db, int iDb, const char *zName); void sqlite3Attach(Parse*, Expr*, Expr*, Expr*); void sqlite3Detach(Parse*, Expr*); void sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*); int sqlite3FixSrcList(DbFixer*, SrcList*); int sqlite3FixSelect(DbFixer*, Select*); int sqlite3FixExpr(DbFixer*, Expr*); int sqlite3FixTriggerStep(DbFixer*, TriggerStep*); int sqlite3RealSameAsInt(double,sqlite3_int64); i64 sqlite3RealToI64(double); int sqlite3Int64ToText(i64,char*); int sqlite3AtoF(const char *z, double*, int, u8); int sqlite3GetInt32(const char *, int*); int sqlite3GetUInt32(const char*, u32*); int sqlite3Atoi(const char*); #ifndef SQLITE_OMIT_UTF16 int sqlite3Utf16ByteLen(const void *pData, int nByte, int nChar); #endif int sqlite3Utf8CharLen(const char *pData, int nByte); u32 sqlite3Utf8Read(const u8**); int sqlite3Utf8ReadLimited(const u8*, int, u32*); LogEst sqlite3LogEst(u64); LogEst sqlite3LogEstAdd(LogEst,LogEst); LogEst sqlite3LogEstFromDouble(double); u64 sqlite3LogEstToInt(LogEst); VList *sqlite3VListAdd(sqlite3*,VList*,const char*,int,int); const char *sqlite3VListNumToName(VList*,int); int sqlite3VListNameToNum(VList*,const char*,int); /* ** Routines to read and write variable-length integers. These used to ** be defined locally, but now we use the varint routines in the util.c ** file. */ int sqlite3PutVarint(unsigned char*, u64); u8 sqlite3GetVarint(const unsigned char *, u64 *); u8 sqlite3GetVarint32(const unsigned char *, u32 *); int sqlite3VarintLen(u64 v); /* ** The common case is for a varint to be a single byte. They following ** macros handle the common case without a procedure call, but then call ** the procedure for larger varints. */ #define getVarint32(A,B) \ (u8)((*(A)<(u8)0x80)?((B)=(u32)*(A)),1:sqlite3GetVarint32((A),(u32 *)&(B))) #define getVarint32NR(A,B) \ B=(u32)*(A);if(B>=0x80)sqlite3GetVarint32((A),(u32*)&(B)) #define putVarint32(A,B) \ (u8)(((u32)(B)<(u32)0x80)?(*(A)=(unsigned char)(B)),1:\ sqlite3PutVarint((A),(B))) #define getVarint sqlite3GetVarint #define putVarint sqlite3PutVarint const char *sqlite3IndexAffinityStr(sqlite3*, Index*); char *sqlite3TableAffinityStr(sqlite3*,const Table*); void sqlite3TableAffinity(Vdbe*, Table*, int); char sqlite3CompareAffinity(const Expr *pExpr, char aff2); int sqlite3IndexAffinityOk(const Expr *pExpr, char idx_affinity); char sqlite3TableColumnAffinity(const Table*,int); char sqlite3ExprAffinity(const Expr *pExpr); int sqlite3ExprDataType(const Expr *pExpr); int sqlite3Atoi64(const char*, i64*, int, u8); int sqlite3DecOrHexToI64(const char*, i64*); void sqlite3ErrorWithMsg(sqlite3*, int, const char*,...); void sqlite3Error(sqlite3*,int); void sqlite3ErrorClear(sqlite3*); void sqlite3SystemError(sqlite3*,int); #if !defined(SQLITE_OMIT_BLOB_LITERAL) void *sqlite3HexToBlob(sqlite3*, const char *z, int n); #endif u8 sqlite3HexToInt(int h); int sqlite3TwoPartName(Parse *, Token *, Token *, Token **); #if defined(SQLITE_NEED_ERR_NAME) const char *sqlite3ErrName(int); #endif #ifndef SQLITE_OMIT_DESERIALIZE int sqlite3MemdbInit(void); int sqlite3IsMemdb(const sqlite3_vfs*); #else # define sqlite3IsMemdb(X) 0 #endif const char *sqlite3ErrStr(int); int sqlite3ReadSchema(Parse *pParse); CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int); int sqlite3IsBinary(const CollSeq*); CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName); void sqlite3SetTextEncoding(sqlite3 *db, u8); CollSeq *sqlite3ExprCollSeq(Parse *pParse, const Expr *pExpr); CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, const Expr *pExpr); int sqlite3ExprCollSeqMatch(Parse*,const Expr*,const Expr*); Expr *sqlite3ExprAddCollateToken(const Parse *pParse, Expr*, const Token*, int); Expr *sqlite3ExprAddCollateString(const Parse*,Expr*,const char*); Expr *sqlite3ExprSkipCollate(Expr*); Expr *sqlite3ExprSkipCollateAndLikely(Expr*); int sqlite3CheckCollSeq(Parse *, CollSeq *); int sqlite3WritableSchema(sqlite3*); int sqlite3CheckObjectName(Parse*, const char*,const char*,const char*); void sqlite3VdbeSetChanges(sqlite3 *, i64); int sqlite3AddInt64(i64*,i64); int sqlite3SubInt64(i64*,i64); int sqlite3MulInt64(i64*,i64); int sqlite3AbsInt32(int); #ifdef SQLITE_ENABLE_8_3_NAMES void sqlite3FileSuffix3(const char*, char*); #else # define sqlite3FileSuffix3(X,Y) #endif u8 sqlite3GetBoolean(const char *z,u8); const void *sqlite3ValueText(sqlite3_value*, u8); int sqlite3ValueIsOfClass(const sqlite3_value*, void(*)(void*)); int sqlite3ValueBytes(sqlite3_value*, u8); void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8, void(*)(void*)); void sqlite3ValueSetNull(sqlite3_value*); void sqlite3ValueFree(sqlite3_value*); #ifndef SQLITE_UNTESTABLE void sqlite3ResultIntReal(sqlite3_context*); #endif sqlite3_value *sqlite3ValueNew(sqlite3 *); #ifndef SQLITE_OMIT_UTF16 char *sqlite3Utf16to8(sqlite3 *, const void*, int, u8); #endif int sqlite3ValueFromExpr(sqlite3 *, const Expr *, u8, u8, sqlite3_value **); void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8); #ifndef SQLITE_AMALGAMATION extern const unsigned char sqlite3OpcodeProperty[]; extern const char sqlite3StrBINARY[]; extern const unsigned char sqlite3StdTypeLen[]; extern const char sqlite3StdTypeAffinity[]; extern const char *sqlite3StdType[]; extern const unsigned char sqlite3UpperToLower[]; extern const unsigned char *sqlite3aLTb; extern const unsigned char *sqlite3aEQb; extern const unsigned char *sqlite3aGTb; extern const unsigned char sqlite3CtypeMap[]; extern SQLITE_WSD struct Sqlite3Config sqlite3Config; extern FuncDefHash sqlite3BuiltinFunctions; #ifndef SQLITE_OMIT_WSD extern int sqlite3PendingByte; #endif #endif /* SQLITE_AMALGAMATION */ #ifdef VDBE_PROFILE extern sqlite3_uint64 sqlite3NProfileCnt; #endif void sqlite3RootPageMoved(sqlite3*, int, Pgno, Pgno); void sqlite3Reindex(Parse*, Token*, Token*); void sqlite3AlterFunctions(void); void sqlite3AlterRenameTable(Parse*, SrcList*, Token*); void sqlite3AlterRenameColumn(Parse*, SrcList*, Token*, Token*); int sqlite3GetToken(const unsigned char *, int *); void sqlite3NestedParse(Parse*, const char*, ...); void sqlite3ExpirePreparedStatements(sqlite3*, int); void sqlite3CodeRhsOfIN(Parse*, Expr*, int); int sqlite3CodeSubselect(Parse*, Expr*); void sqlite3SelectPrep(Parse*, Select*, NameContext*); int sqlite3ExpandSubquery(Parse*, SrcItem*); void sqlite3SelectWrongNumTermsError(Parse *pParse, Select *p); int sqlite3MatchEName( const struct ExprList_item*, const char*, const char*, const char*, int* ); Bitmask sqlite3ExprColUsed(Expr*); u8 sqlite3StrIHash(const char*); int sqlite3ResolveExprNames(NameContext*, Expr*); int sqlite3ResolveExprListNames(NameContext*, ExprList*); void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*); int sqlite3ResolveSelfReference(Parse*,Table*,int,Expr*,ExprList*); int sqlite3ResolveOrderGroupBy(Parse*, Select*, ExprList*, const char*); void sqlite3ColumnDefault(Vdbe *, Table *, int, int); void sqlite3AlterFinishAddColumn(Parse *, Token *); void sqlite3AlterBeginAddColumn(Parse *, SrcList *); void sqlite3AlterDropColumn(Parse*, SrcList*, const Token*); const void *sqlite3RenameTokenMap(Parse*, const void*, const Token*); void sqlite3RenameTokenRemap(Parse*, const void *pTo, const void *pFrom); void sqlite3RenameExprUnmap(Parse*, Expr*); void sqlite3RenameExprlistUnmap(Parse*, ExprList*); CollSeq *sqlite3GetCollSeq(Parse*, u8, CollSeq *, const char*); char sqlite3AffinityType(const char*, Column*); void sqlite3Analyze(Parse*, Token*, Token*); int sqlite3InvokeBusyHandler(BusyHandler*); int sqlite3FindDb(sqlite3*, Token*); int sqlite3FindDbName(sqlite3 *, const char *); int sqlite3AnalysisLoad(sqlite3*,int iDB); void sqlite3DeleteIndexSamples(sqlite3*,Index*); void sqlite3DefaultRowEst(Index*); void sqlite3RegisterLikeFunctions(sqlite3*, int); int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*); void sqlite3SchemaClear(void *); Schema *sqlite3SchemaGet(sqlite3 *, Btree *); int sqlite3SchemaToIndex(sqlite3 *db, Schema *); KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int); void sqlite3KeyInfoUnref(KeyInfo*); KeyInfo *sqlite3KeyInfoRef(KeyInfo*); KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*); KeyInfo *sqlite3KeyInfoFromExprList(Parse*, ExprList*, int, int); const char *sqlite3SelectOpName(int); int sqlite3HasExplicitNulls(Parse*, ExprList*); #ifdef SQLITE_DEBUG int sqlite3KeyInfoIsWriteable(KeyInfo*); #endif int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *, void (*)(sqlite3_context*,int,sqlite3_value **), void (*)(sqlite3_context*,int,sqlite3_value **), void (*)(sqlite3_context*), void (*)(sqlite3_context*), void (*)(sqlite3_context*,int,sqlite3_value **), FuncDestructor *pDestructor ); void sqlite3NoopDestructor(void*); void *sqlite3OomFault(sqlite3*); void sqlite3OomClear(sqlite3*); int sqlite3ApiExit(sqlite3 *db, int); int sqlite3OpenTempDatabase(Parse *); char *sqlite3RCStrRef(char*); void sqlite3RCStrUnref(void*); char *sqlite3RCStrNew(u64); char *sqlite3RCStrResize(char*,u64); void sqlite3StrAccumInit(StrAccum*, sqlite3*, char*, int, int); int sqlite3StrAccumEnlarge(StrAccum*, i64); char *sqlite3StrAccumFinish(StrAccum*); void sqlite3StrAccumSetError(StrAccum*, u8); void sqlite3ResultStrAccum(sqlite3_context*,StrAccum*); void sqlite3SelectDestInit(SelectDest*,int,int); Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int); void sqlite3RecordErrorByteOffset(sqlite3*,const char*); void sqlite3RecordErrorOffsetOfExpr(sqlite3*,const Expr*); void sqlite3BackupRestart(sqlite3_backup *); void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *); #ifndef SQLITE_OMIT_SUBQUERY int sqlite3ExprCheckIN(Parse*, Expr*); #else # define sqlite3ExprCheckIN(x,y) SQLITE_OK #endif #ifdef SQLITE_ENABLE_STAT4 int sqlite3Stat4ProbeSetValue( Parse*,Index*,UnpackedRecord**,Expr*,int,int,int*); int sqlite3Stat4ValueFromExpr(Parse*, Expr*, u8, sqlite3_value**); void sqlite3Stat4ProbeFree(UnpackedRecord*); int sqlite3Stat4Column(sqlite3*, const void*, int, int, sqlite3_value**); char sqlite3IndexColumnAffinity(sqlite3*, Index*, int); #endif /* ** The interface to the LEMON-generated parser */ #ifndef SQLITE_AMALGAMATION void *sqlite3ParserAlloc(void*(*)(u64), Parse*); void sqlite3ParserFree(void*, void(*)(void*)); #endif void sqlite3Parser(void*, int, Token); int sqlite3ParserFallback(int); #ifdef YYTRACKMAXSTACKDEPTH int sqlite3ParserStackPeak(void*); #endif void sqlite3AutoLoadExtensions(sqlite3*); #ifndef SQLITE_OMIT_LOAD_EXTENSION void sqlite3CloseExtensions(sqlite3*); #else # define sqlite3CloseExtensions(X) #endif #ifndef SQLITE_OMIT_SHARED_CACHE void sqlite3TableLock(Parse *, int, Pgno, u8, const char *); #else #define sqlite3TableLock(v,w,x,y,z) #endif #ifdef SQLITE_TEST int sqlite3Utf8To8(unsigned char*); #endif #ifdef SQLITE_OMIT_VIRTUALTABLE # define sqlite3VtabClear(D,T) # define sqlite3VtabSync(X,Y) SQLITE_OK # define sqlite3VtabRollback(X) # define sqlite3VtabCommit(X) # define sqlite3VtabInSync(db) 0 # define sqlite3VtabLock(X) # define sqlite3VtabUnlock(X) # define sqlite3VtabModuleUnref(D,X) # define sqlite3VtabUnlockList(X) # define sqlite3VtabSavepoint(X, Y, Z) SQLITE_OK # define sqlite3GetVTable(X,Y) ((VTable*)0) #else void sqlite3VtabClear(sqlite3 *db, Table*); void sqlite3VtabDisconnect(sqlite3 *db, Table *p); int sqlite3VtabSync(sqlite3 *db, Vdbe*); int sqlite3VtabRollback(sqlite3 *db); int sqlite3VtabCommit(sqlite3 *db); void sqlite3VtabLock(VTable *); void sqlite3VtabUnlock(VTable *); void sqlite3VtabModuleUnref(sqlite3*,Module*); void sqlite3VtabUnlockList(sqlite3*); int sqlite3VtabSavepoint(sqlite3 *, int, int); void sqlite3VtabImportErrmsg(Vdbe*, sqlite3_vtab*); VTable *sqlite3GetVTable(sqlite3*, Table*); Module *sqlite3VtabCreateModule( sqlite3*, const char*, const sqlite3_module*, void*, void(*)(void*) ); # define sqlite3VtabInSync(db) ((db)->nVTrans>0 && (db)->aVTrans==0) #endif int sqlite3ReadOnlyShadowTables(sqlite3 *db); #ifndef SQLITE_OMIT_VIRTUALTABLE int sqlite3ShadowTableName(sqlite3 *db, const char *zName); int sqlite3IsShadowTableOf(sqlite3*,Table*,const char*); void sqlite3MarkAllShadowTablesOf(sqlite3*, Table*); #else # define sqlite3ShadowTableName(A,B) 0 # define sqlite3IsShadowTableOf(A,B,C) 0 # define sqlite3MarkAllShadowTablesOf(A,B) #endif int sqlite3VtabEponymousTableInit(Parse*,Module*); void sqlite3VtabEponymousTableClear(sqlite3*,Module*); void sqlite3VtabMakeWritable(Parse*,Table*); void sqlite3VtabBeginParse(Parse*, Token*, Token*, Token*, int); void sqlite3VtabFinishParse(Parse*, Token*); void sqlite3VtabArgInit(Parse*); void sqlite3VtabArgExtend(Parse*, Token*); int sqlite3VtabCallCreate(sqlite3*, int, const char *, char **); int sqlite3VtabCallConnect(Parse*, Table*); int sqlite3VtabCallDestroy(sqlite3*, int, const char *); int sqlite3VtabBegin(sqlite3 *, VTable *); FuncDef *sqlite3VtabOverloadFunction(sqlite3 *,FuncDef*, int nArg, Expr*); void sqlite3VtabUsesAllSchemas(Parse*); sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context*); int sqlite3VdbeParameterIndex(Vdbe*, const char*, int); int sqlite3TransferBindings(sqlite3_stmt *, sqlite3_stmt *); void sqlite3ParseObjectInit(Parse*,sqlite3*); void sqlite3ParseObjectReset(Parse*); void *sqlite3ParserAddCleanup(Parse*,void(*)(sqlite3*,void*),void*); #ifdef SQLITE_ENABLE_NORMALIZE char *sqlite3Normalize(Vdbe*, const char*); #endif int sqlite3Reprepare(Vdbe*); void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*); CollSeq *sqlite3ExprCompareCollSeq(Parse*,const Expr*); CollSeq *sqlite3BinaryCompareCollSeq(Parse *, const Expr*, const Expr*); int sqlite3TempInMemory(const sqlite3*); const char *sqlite3JournalModename(int); #ifndef SQLITE_OMIT_WAL int sqlite3Checkpoint(sqlite3*, int, int, int*, int*); int sqlite3WalDefaultHook(void*,sqlite3*,const char*,int); #endif #ifndef SQLITE_OMIT_CTE Cte *sqlite3CteNew(Parse*,Token*,ExprList*,Select*,u8); void sqlite3CteDelete(sqlite3*,Cte*); With *sqlite3WithAdd(Parse*,With*,Cte*); void sqlite3WithDelete(sqlite3*,With*); void sqlite3WithDeleteGeneric(sqlite3*,void*); With *sqlite3WithPush(Parse*, With*, u8); #else # define sqlite3CteNew(P,T,E,S) ((void*)0) # define sqlite3CteDelete(D,C) # define sqlite3CteWithAdd(P,W,C) ((void*)0) # define sqlite3WithDelete(x,y) # define sqlite3WithPush(x,y,z) ((void*)0) #endif #ifndef SQLITE_OMIT_UPSERT Upsert *sqlite3UpsertNew(sqlite3*,ExprList*,Expr*,ExprList*,Expr*,Upsert*); void sqlite3UpsertDelete(sqlite3*,Upsert*); Upsert *sqlite3UpsertDup(sqlite3*,Upsert*); int sqlite3UpsertAnalyzeTarget(Parse*,SrcList*,Upsert*,Upsert*); void sqlite3UpsertDoUpdate(Parse*,Upsert*,Table*,Index*,int); Upsert *sqlite3UpsertOfIndex(Upsert*,Index*); int sqlite3UpsertNextIsIPK(Upsert*); #else #define sqlite3UpsertNew(u,v,w,x,y,z) ((Upsert*)0) #define sqlite3UpsertDelete(x,y) #define sqlite3UpsertDup(x,y) ((Upsert*)0) #define sqlite3UpsertOfIndex(x,y) ((Upsert*)0) #define sqlite3UpsertNextIsIPK(x) 0 #endif /* Declarations for functions in fkey.c. All of these are replaced by ** no-op macros if OMIT_FOREIGN_KEY is defined. In this case no foreign ** key functionality is available. If OMIT_TRIGGER is defined but ** OMIT_FOREIGN_KEY is not, only some of the functions are no-oped. In ** this case foreign keys are parsed, but no other functionality is ** provided (enforcement of FK constraints requires the triggers sub-system). */ #if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) void sqlite3FkCheck(Parse*, Table*, int, int, int*, int); void sqlite3FkDropTable(Parse*, SrcList *, Table*); void sqlite3FkActions(Parse*, Table*, ExprList*, int, int*, int); int sqlite3FkRequired(Parse*, Table*, int*, int); u32 sqlite3FkOldmask(Parse*, Table*); FKey *sqlite3FkReferences(Table *); void sqlite3FkClearTriggerCache(sqlite3*,int); #else #define sqlite3FkActions(a,b,c,d,e,f) #define sqlite3FkCheck(a,b,c,d,e,f) #define sqlite3FkDropTable(a,b,c) #define sqlite3FkOldmask(a,b) 0 #define sqlite3FkRequired(a,b,c,d) 0 #define sqlite3FkReferences(a) 0 #define sqlite3FkClearTriggerCache(a,b) #endif #ifndef SQLITE_OMIT_FOREIGN_KEY void sqlite3FkDelete(sqlite3 *, Table*); int sqlite3FkLocateIndex(Parse*,Table*,FKey*,Index**,int**); #else #define sqlite3FkDelete(a,b) #define sqlite3FkLocateIndex(a,b,c,d,e) #endif /* ** Available fault injectors. Should be numbered beginning with 0. */ #define SQLITE_FAULTINJECTOR_MALLOC 0 #define SQLITE_FAULTINJECTOR_COUNT 1 /* ** The interface to the code in fault.c used for identifying "benign" ** malloc failures. This is only present if SQLITE_UNTESTABLE ** is not defined. */ #ifndef SQLITE_UNTESTABLE void sqlite3BeginBenignMalloc(void); void sqlite3EndBenignMalloc(void); #else #define sqlite3BeginBenignMalloc() #define sqlite3EndBenignMalloc() #endif /* ** Allowed return values from sqlite3FindInIndex() */ #define IN_INDEX_ROWID 1 /* Search the rowid of the table */ #define IN_INDEX_EPH 2 /* Search an ephemeral b-tree */ #define IN_INDEX_INDEX_ASC 3 /* Existing index ASCENDING */ #define IN_INDEX_INDEX_DESC 4 /* Existing index DESCENDING */ #define IN_INDEX_NOOP 5 /* No table available. Use comparisons */ /* ** Allowed flags for the 3rd parameter to sqlite3FindInIndex(). */ #define IN_INDEX_NOOP_OK 0x0001 /* OK to return IN_INDEX_NOOP */ #define IN_INDEX_MEMBERSHIP 0x0002 /* IN operator used for membership test */ #define IN_INDEX_LOOP 0x0004 /* IN operator used as a loop */ int sqlite3FindInIndex(Parse *, Expr *, u32, int*, int*, int*); int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int); int sqlite3JournalSize(sqlite3_vfs *); #if defined(SQLITE_ENABLE_ATOMIC_WRITE) \ || defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE) int sqlite3JournalCreate(sqlite3_file *); #endif int sqlite3JournalIsInMemory(sqlite3_file *p); void sqlite3MemJournalOpen(sqlite3_file *); void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p); #if SQLITE_MAX_EXPR_DEPTH>0 int sqlite3SelectExprHeight(const Select *); int sqlite3ExprCheckHeight(Parse*, int); #else #define sqlite3SelectExprHeight(x) 0 #define sqlite3ExprCheckHeight(x,y) #endif void sqlite3ExprSetErrorOffset(Expr*,int); u32 sqlite3Get4byte(const u8*); void sqlite3Put4byte(u8*, u32); #ifdef SQLITE_ENABLE_UNLOCK_NOTIFY void sqlite3ConnectionBlocked(sqlite3 *, sqlite3 *); void sqlite3ConnectionUnlocked(sqlite3 *db); void sqlite3ConnectionClosed(sqlite3 *db); #else #define sqlite3ConnectionBlocked(x,y) #define sqlite3ConnectionUnlocked(x) #define sqlite3ConnectionClosed(x) #endif #ifdef SQLITE_DEBUG void sqlite3ParserTrace(FILE*, char *); #endif #if defined(YYCOVERAGE) int sqlite3ParserCoverage(FILE*); #endif /* ** If the SQLITE_ENABLE IOTRACE exists then the global variable ** sqlite3IoTrace is a pointer to a printf-like routine used to ** print I/O tracing messages. */ #ifdef SQLITE_ENABLE_IOTRACE # define IOTRACE(A) if( sqlite3IoTrace ){ sqlite3IoTrace A; } void sqlite3VdbeIOTraceSql(Vdbe*); SQLITE_API SQLITE_EXTERN void (SQLITE_CDECL *sqlite3IoTrace)(const char*,...); #else # define IOTRACE(A) # define sqlite3VdbeIOTraceSql(X) #endif /* ** These routines are available for the mem2.c debugging memory allocator ** only. They are used to verify that different "types" of memory ** allocations are properly tracked by the system. ** ** sqlite3MemdebugSetType() sets the "type" of an allocation to one of ** the MEMTYPE_* macros defined below. The type must be a bitmask with ** a single bit set. ** ** sqlite3MemdebugHasType() returns true if any of the bits in its second ** argument match the type set by the previous sqlite3MemdebugSetType(). ** sqlite3MemdebugHasType() is intended for use inside assert() statements. ** ** sqlite3MemdebugNoType() returns true if none of the bits in its second ** argument match the type set by the previous sqlite3MemdebugSetType(). ** ** Perhaps the most important point is the difference between MEMTYPE_HEAP ** and MEMTYPE_LOOKASIDE. If an allocation is MEMTYPE_LOOKASIDE, that means ** it might have been allocated by lookaside, except the allocation was ** too large or lookaside was already full. It is important to verify ** that allocations that might have been satisfied by lookaside are not ** passed back to non-lookaside free() routines. Asserts such as the ** example above are placed on the non-lookaside free() routines to verify ** this constraint. ** ** All of this is no-op for a production build. It only comes into ** play when the SQLITE_MEMDEBUG compile-time option is used. */ #ifdef SQLITE_MEMDEBUG void sqlite3MemdebugSetType(void*,u8); int sqlite3MemdebugHasType(const void*,u8); int sqlite3MemdebugNoType(const void*,u8); #else # define sqlite3MemdebugSetType(X,Y) /* no-op */ # define sqlite3MemdebugHasType(X,Y) 1 # define sqlite3MemdebugNoType(X,Y) 1 #endif #define MEMTYPE_HEAP 0x01 /* General heap allocations */ #define MEMTYPE_LOOKASIDE 0x02 /* Heap that might have been lookaside */ #define MEMTYPE_PCACHE 0x04 /* Page cache allocations */ /* ** Threading interface */ #if SQLITE_MAX_WORKER_THREADS>0 int sqlite3ThreadCreate(SQLiteThread**,void*(*)(void*),void*); int sqlite3ThreadJoin(SQLiteThread*, void**); #endif #if defined(SQLITE_ENABLE_DBPAGE_VTAB) || defined(SQLITE_TEST) int sqlite3DbpageRegister(sqlite3*); #endif #if defined(SQLITE_ENABLE_DBSTAT_VTAB) || defined(SQLITE_TEST) int sqlite3DbstatRegister(sqlite3*); #endif int sqlite3ExprVectorSize(const Expr *pExpr); int sqlite3ExprIsVector(const Expr *pExpr); Expr *sqlite3VectorFieldSubexpr(Expr*, int); Expr *sqlite3ExprForVectorField(Parse*,Expr*,int,int); void sqlite3VectorErrorMsg(Parse*, Expr*); #ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS const char **sqlite3CompileOptions(int *pnOpt); #endif #if SQLITE_OS_UNIX && defined(SQLITE_OS_KV_OPTIONAL) int sqlite3KvvfsInit(void); #endif #if defined(VDBE_PROFILE) \ || defined(SQLITE_PERFORMANCE_TRACE) \ || defined(SQLITE_ENABLE_STMT_SCANSTATUS) sqlite3_uint64 sqlite3Hwtime(void); #endif #ifdef SQLITE_ENABLE_STMT_SCANSTATUS # define IS_STMT_SCANSTATUS(db) (db->flags & SQLITE_StmtScanStatus) #else # define IS_STMT_SCANSTATUS(db) 0 #endif #endif /* SQLITEINT_H */